a game programming library for C/C++ developers distributed freely, supporting the following platforms: DOS, Unix (Linux, FreeBSD, Irix, Solaris, Darwin), Windows, QNX, BeOS and MacOS X. It provides many functions for graphics, sounds, player input, etc..
a high-level audio API. It can play Ogg Vorbis, MP3, FLAC, uncompressed WAV, AIFF, MOD, S3M, XM, and IT files. For audio output, Audiere supports DirectSound or WinMM in Windows, OSS on Linux and Cygwin, and SGI AL on IRIX
modular video jockey software. The base visuals can be chosen from sources like video files or cameras. Then they can be modified by filters and mixers.
a library for reading and editing the meta-data of several popular audio formats. Currently it supports both ID3v1 and ID3v2 for MP3 files, Ogg Vorbis comments and ID3 tags and Vorbis comments in FLAC files.
a cross platform audio library and toolset to let you easily implement the latest audio technologies into your title. FMOD now supports 13 platforms! Win32, Win64, WinCE, Linux, Linux64, Macintosh (os8/9/10/x86) PS2, PSP, PS3, Xbox, Xbox 360
a multi-platform game library for C/C++ developers that provides many functions for graphics, sounds, player input (keyboard, mouse, and joystick), and timers. It also provides fixed and floating point mathematical functions, 3D functions, etc...
Simple DirectMedia Layer is a cross-platform multimedia library designed to provide low level access to audio, keyboard, mouse, joystick, 3D hardware via OpenGL, and 2D video framebuffer.
an application for viewing and analysing the contents of music audio files, containing advanced waveform and spectrogram viewers as well as editors for many sorts of audio annotations. It supports sophisticated audio selection, looping, and playback features, as well as the Vamp audio feature extraction plugin format.
framework for audio synthesis. It aims to be as powerful as Csound but with the programming features of C++. Nsound tries to make the process of generating complex and interesting sound as easy for the programmer as possible.
a framework for developing games. Open source extendable, object-oriented game engine written in C++engine with cross-platform plugin-based architecture.