Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc
Scripting platform, modding framework and VR support for RE Engine
Godot game template and component-based framework
3D game engine/framework in C, with Luajit and Python bindings now
Capstone disassembly/disassembler framework
Powerful embedded Lua Engine for IoT devices, with many components
A lightweight, embeddable software-defined radio framework
Open-source, cross-platform, game-development tools