libfaketime modifies the system time for a single application

GDI, OpenGL and Direct3D 9 re-implementation of the DirectDraw API for classic 2D games for better compatibility with Windows ME, 2000, XP, Vista, 7, 8, 10, 11, Wine (Linux/macOS/Android) and Virtual Machines

Fixes compatibility issues with older games running on Windows 10/11 by wrapping DirectX dlls. Also allows loading custom libraries with the file extension .asi into game processes.

An audio effect processor for PipeWire and PulseAudio clients

GL4ES is a OpenGL 2.1/1.5 to GL ES 2.0/1.1 translation library, with support for Pandora, ODroid, OrangePI, CHIP, Raspberry PI, Android, Emscripten and AmigaOS4.

QuickJS C++ wrapper

Marker tracking using the front-facing camera of HoloLens (both 1 and 2) and Unity, with a wrapper of ARToolKit built for UWP (Windows Universal Platform)

A C++ binding/wrapper library for the Duktape JavaScript interpreter.

Rust FFI wrapper for CRoaring

XUSG, XU's supreme graphics lib, is a handy wrapper currently for DirectX 12. It can be a good reference for designing your own DX12 wrapper APIs.

A compatibility layer for applications packaged as .apk. Can run certain Android games on non-Android Linux (glibc and others).

C Framework for OpenCL

Transparent UTF-8 support for native Win32 ANSI applications

RT-Thread操作系统的uCOS-III兼容层 | uCOS-III RTOS Application Compatibility Layer (ACL) for RT-Thread

A small wrapper around SQLite for the D programming language

C++ wrapper for CoreFoundation base classes.

Run, feed and style your Lemonbar with ease

A Discord Game SDK wrapper for Godot, written in C.

VVrap of the excellent miniaudio C audio library

C++ Framework For Fast Development: OOP wrappers and helpers for OpenCL, SQLite, Microsoft RPC API (DCE), Windows Web Services API (SOAP), Extensible Storage Engine (ESENT) and Service Broker (SQL Server). Also: garbage collection, exception handling, logging, stack tracing and command line parser. Ports available from POSIX to Windows 10 Mobile.