JUCE is an open-source cross-platform C++ application framework
NativeScript for Android using v8
Cross platform toolkit for creative coding in C++
Open-source, cross platform Qt based IDE for reverse-engineering
Real-time physically based rendering engine for Android, iOS, and more
A static analyzer for Java, C, C++, and Objective-C
Memory Efficient Serialization Library
Desktop/Android/HTML5/iOS Java game development framework
RenderDoc is a stand-alone graphics debugging tool
Cross-platform tool to build, test and package software
A modern library for 3D data processing
A collection of tools, libraries, and tests for Vulkan shader
Fast Binary Encoding is fast and universal serialization solution
MNN is a blazing fast, lightweight deep learning framework
A standalone, large scale, open project for 2D/3D image processing
stb single-file public domain libraries for C/C++
The FastLED library for colored LED animation on Arduino
ArkScript is a small, fast, functional and scripting language for C++
Cross-platform, cross-blockchain wallet library
A language for fast, portable data-parallel computation
Fast C++ logging library
Web Framework built on top of Qt, using the approach of Catalyst
Kotlin Multiplatform bindings to Skia
Popular Open Source Online Judge based on PHP/C++/MySQL/Linux
Jsonnet, the data templating language