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LibSys (Library Management System Software)

LibSys, LibSys Installer, LibSys Updater © 2026 – Habil Eren Türker

About the Project

LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.

⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes. My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library. You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.

Features

  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support

Technology & Structure

  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)

Installation

If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile. Also you must install Qt Framework (Version at least 6.10.0).

You can find more information here: (Qt) (MSYS2) (mingw-w64)

Also you must change all CMakeLists.txt files'

set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")

part with the path you have Qt installed.

Follow the steps below to run the project on your machine:

git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name

Project Directory Structure

/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage

See (Usage) When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.

Do not delete these files.

Contributing

Contributions are welcome! Please follow these steps:

  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.

Testing

Manual testing scenarios:

  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset

License

This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)

This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.

This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).

This project uses AES library which is licensed under MIT License. See AES project (AES link).

See (MIT License)

Contact

For questions or suggestions, reach out via habilerenturker@hotmail.com .

About

LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.

Topics

cmakecppmakefileqt

Resources

Readme
GPL-3.0 license
Activity

Stars

0 stars

Watchers

0 watching

Forks

1 fork
Report repository

Releases

Packages

Used by

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
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LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
LibSys (Library Management System Software)
LibSys, LibSys Installer, LibSys Updater
© 2026 – Habil Eren Türker
About the Project
LibSys is an open-source library management system written in C++ that handles book borrow operations, user management, and catalog operations.
⚠️Attention: This project is still under test. You may encounter bugs and crashes. I, Habil Eren Türker, created this open-source project for educational purposes.
My main goal during the development of this project was creating a software which my school (Çemberlitaş Anatolian High School) can use in its library.
You need .dll files to run these programs. You can find them in LibSysPackage.zip in releases.
Features
  • Book management (add, remove, update)
  • User management (add member, remove member, update member info)
  • Borrow and return operations
  • Basic search and filtering functionality
  • Modular and extensible architecture
  • User-friendly GUI
  • RFID support
Technology & Structure
  • Programming Language: C++
  • Build system: CMake + Makefile
  • License: GNU GPL v3.0 (License)
Installation
If you are using Windows, you must install mingw-w64/MSYS2 and tools G++, CMake and Makefile.
Also you must install Qt Framework (Version at least 6.10.0).
You can find more information here:
(Qt)
(MSYS2)
(mingw-w64)
Also you must change all CMakeLists.txt files'
set(CMAKE_PREFIX_PATH "C:/Qt/6.10.2/mingw_64")
part with the path you have Qt installed.
Follow the steps below to run the project on your machine:
git clone https://github.com/herenturker/LibSys.git cd LibSys mkdir project &&cd project make build # Create CMake build files. If you want to build files a seperate, run make <program_name>. Example: make LibSys
./LibSys # or the generated executable name 
Project Directory Structure
/LibSys
│ ├─ LibSys/ # Main source code of LibSys
├─ LibSysInstaller/ # LibSys Installer Source Codes ├─ LibSysUpdater/ # LibSys Updater Source Codes ├─ .vscode/ # VS Code settings ├─ .github/ # Repository Settings
├─ Makefile # Build script
├─ docs/images # Documents and images for this project
| └─ USAGE.md # Usage document for this project.
| └─ ARDUINO.md # Arduino RFID reader connections document for this project.
├─ LICENSE # License of the project
├─ Arduino/ # Arduino code for RFID Data reading
├─ README.md # README file for this project
└─ version.json # Current version of LibSys

Usage
See (Usage)
When you run LibSys, program would create databases directory with databases/users.db and databases/library.db and a log.log in program directory.
Do not delete these files.
Contributing
Contributions are welcome! Please follow these steps:
  • Fork the repository and create your branch.
  • Commit and push your changes.
  • Open a pull request.
  • Ensure your code is tested and readable.
Testing
Manual testing scenarios:
  • Add a new book → should appear in the database
  • Add a new member → should be able to borrow books
  • Lend a book → member and book status updated
  • Return a book → lending status reset
License
This project is licensed under GNU GPL v3.0. See the LICENSE file for details. (GitHub link)
This project uses Qt 6.10.2 which is licensed under GNU LGPL v3.0. See (Qt License) for more information.
This project uses serialib library which is licensed under MIT License. See serialib project (serialib link).
This project uses AES library which is licensed under MIT License. See AES project (AES link).
See (MIT License)
Contact
For questions or suggestions, reach out via habilerenturker@hotmail.com .
About
LibSys (Library Management System Software) is an open-source project which is created for handling library operations. It is made to understand Qt framework and to solve library operation problems at my high school.
Topics
cmakecppmakefileqt
Resources
Readme
GPL-3.0 license
Activity
Stars
0 stars
Watchers
0 watching
Forks
1 fork
Report repository
Releases
Packages
Used by
Contributors
Languages