OpenGL Extension Viewer

OpenGL Extension Viewer is a dependable Windows program that displays the vendor name, version implemented, renderer name, and extensions for the current OpenGL 3D accelerator. Many app extensions, as well as extensions to related APIs such as GLU, GLX, and WGL, have been specified by individual vendors or groups of vendors. SGI maintains the extension registry, which contains specifications for all known extensions that are written as updates to the proper specification page. The registry also specifies naming conventions, instructions for developing new extensions, authoring appropriate extension specifications, and other associated documents. OpenGL Extension Viewer is an excellent free tool for Windows PCs that provides information on OpenGL extensions. 

If you are looking for alternatives to OpenGL Extension Viewer, we recommend downloading HWiNFO64 or GPU-Z. 

Note: Requires .NET Framework.