Libgls allows stereoscopic rendering with OpenGL, without requiring hardware support for quad-buffered stereo. Many stereoscopic display modes are supported, from anaglyph glasses to various types of 3D TVs and stereoscopic displays.
Bino is a stereoscopic 3D video player with multi-display support. It supports many 2D and 3D video formats, a wide range of display devices, and distributed multi-display video presentation, e.g. for multi-projector setups.