ModdedPE is a launcher which allows you to open Minecraft:PE and load NMods.ModdedPE can also be used as a library for your project.
Here are some samples can help you develop NMods:
https://github.com/ModelPart/NMOD-Examples
Would like to develop another mcpe launcher which can load NMods?
The Open Source NModAPI will help you a lot:)
https://github.com/ModelPart/NModAPI
Cydia Substrate framework by Saurik, licensed under the GNU Lesser General Public License.
Card View Library, licensed under the Apache License 2.0.
Android Support Library, licensed under the Apache License 2.0.
Support Design Library, licensed under the Apache License 2.0.
https://github.com/ModelPart/ModdedPE/tree/master/PrivacyPolicy