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json-parser

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json

nlohmann / json

JSON for Modern C++

json json-serialization msgpack cbor json-parser header-only messagepack json-pointer json-patch stl-containers rfc-6901 rfc-6902 rfc-7159 rfc-7049 json-diff bson ubjson json-merge-patch rfc-8259

Updated Aug 4, 2026
C++

flatbuffers

google / flatbuffers

FlatBuffers: Memory Efficient Serialization Library

javascript python c java go c-sharp rust c-plus-plus serialization typescript protobuf cross-platform flatbuffers zero-copy marshalling grpc rpc json-parser mmap serialization-library

Updated Jun 22, 2026
C++

alibaba / fastjson

FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.

android java serialization json json-serialization deserialization json-parser fastjson json-serializer best-performance

Updated Jul 29, 2026
Java

simdjson

simdjson / simdjson

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

c-plus-plus json neon x64 clang cpp11 simd json-parser avx2 json-pointer arm64 aarch64 avx512 gcc-compiler sse42 risc-v vs2019 clang-cl loongarch64 loongarch

Updated Aug 5, 2026
C++

SwiftyJSON / SwiftyJSON

The better way to deal with JSON data in Swift.

swift json cocoapods carthage request json-parser response swiftyjson json-parsing-swift json-parsing-library

Updated Mar 4, 2026
Swift

gjson

tidwall / gjson

Get JSON values quickly - JSON parser for Go

golang json json-parser

Updated May 14, 2026
Go

json-iterator / go

A high-performance 100% compatible drop-in replacement of "encoding/json"

go golang serialization parser json serializer deserialization json-parser

Updated May 27, 2024
Go

buger / jsonparser

THE fastest alternative JSON parser for Go that does not require schema

go parser json perfomance json-parser

Updated Jul 31, 2026
Go

mailru / easyjson

Fast JSON serializer for golang.

golang json perfomance json-serialization json-parser code-generation

Updated Mar 14, 2026
Go

alibaba / fastjson2

🚄 FASTJSON2 is a Java JSON library with excellent performance.

android java serialization json big-data high-performance json-serialization deserialization json-parser graal jsonb json-path fastjson json-serializer json-deserialization java-json graalvm-native-image fastjson2

Updated Aug 4, 2026
Java

oblac / jodd

Jodd! Lightweight. Java. Zero dependencies. Use what you like.

java jquery ioc mail database micro-framework http-client html-parser java8 json-parser utility-library aop jodd

Updated Apr 15, 2024
Java

ohler55 / oj

Optimized JSON

ruby c rails json json-parser marshaller oj-gem ruby-json-parser

Updated Aug 1, 2026
C

valyala / fastjson

Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection

go fast golang json json-parser json-validation

Updated Feb 21, 2026
Go

devinus / poison

An incredibly fast, pure Elixir JSON library

json elixir json-parser json-library elixir-libraries

Updated Aug 12, 2024
Elixir

simplejson / simplejson

simplejson is a simple, fast, extensible JSON encoder/decoder for Python

python json python3 json-parser python2 json-serializer

Updated Jul 6, 2026
Python

json-iterator / java

jsoniter (json-iterator) is fast and flexible JSON parser available in Java and Go

java serialization parser json serializer deserialization json-parser

Updated Feb 19, 2024
Java

kgabis / parson

Lightweight JSON library written in C.

c parser json json-parser

Updated May 11, 2024
C

nashwaan / xml-js

Converter utility between XML text and Javascript object / JSON text.

javascript parser json cdata xml json-parser xml-parser json-xml json-converter convertor convert-js xml-js

Updated Jul 26, 2024
JavaScript

halaxa / json-machine

Efficient, easy-to-use, and fast PHP JSON stream parser

php parsing stream-processing json-parser json-stream json-iterator

Updated Apr 3, 2026
PHP

uhop / stream-json

A micro-library of stream components for building custom JSON and JSONC processing pipelines with a minimal memory footprint — parse, filter, and transform JSON far larger than available memory with a SAX-inspired token API, on Node.js or Web Streams.

nodejs parser json streaming stream pipeline filter tokenizer sax json-parser memory-efficient large-files streaming-json jsonc web-streams

Updated Jul 29, 2026
JavaScript

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