Realtech VR is a group of French computer coders and artists who created PC demos and software, mostly between 1994 and 1996. Today, they still active although they stopped the demo compos.
Realtech has also released some tools for OpenGL with OpenGL Extensions Viewer in 2001 which is still updated. The program was ported for Mac OS X and Windows 64-bit, one of first 64-bit application for Windows.
Realtech has released DXGL Wrapper, an DirectX to OpenGL wrapper in 2001.
Realtech has also released SkyORB, a space simulation utility for BeOS, Pocket PC, Mac OS X and Windows) in 2002 and still working on it. Realtech is also developing V3X.net, a versatile game engine that is used in all its productions.