PortAudio - PortAudio is a cross platform, open-source, audio I/O library.
FMOD - FMOD Studio is an audio middleware solution and engine for games.
JUCE - JUCE is a wide-ranging C++ class library for building rich cross-platform applications and plugins...
OpenAL - OpenAL is a cross-platform 3D audio API appropriate for use with gaming applications and many other...
RtAudio - RtAudio is a set of C++ classes that provide a common API for realtime audio input/output across...
SoLoud - Easy to use, free, portable c/c++ audio engine for games.