NativeScript for Android using v8
JUCE is an open-source cross-platform C++ application framework
Open-source, cross platform Qt based IDE for reverse-engineering
Memory Efficient Serialization Library
Desktop/Android/HTML5/iOS Java game development framework
A standalone, large scale, open project for 2D/3D image processing
Fast Binary Encoding is fast and universal serialization solution
A static analyzer for Java, C, C++, and Objective-C
A language for fast, portable data-parallel computation
MNN is a blazing fast, lightweight deep learning framework
Cross platform toolkit for creative coding in C++
Fast C++ logging library
Web Framework built on top of Qt, using the approach of Catalyst
Open source Cardboard SDK and samples
Insanely fast native C++, Swift or Kotlin modules
Kotlin Multiplatform bindings to Skia
Cross-platform, cross-blockchain wallet library
Graphical User Interface Toolkit for Python with minimal dependencies
Cross-platform SDK for creating and modifying PDF documents
Cross-platform C++ libraries for building network applications
Library for parsing and validating international phone numbers
Vulkan & C++17 based Scene Graph Project
Cross-platform layout engine which implements Flexbox
Paged Lists & Iterators GXS for C++ Sources by Vincent Radio {Adrix.NT
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)