OpenGL Extensions Viewer is free of charge
and was awarded by Softpedia as 100% FREE
No Spyware, No Adware, No Viruses

You can download the latest version of OpenGL Extensions Viewer :

Release 3.12 (Thu, 26 Mar 2009 02:07:08 GMT)

for Windows XP/Vista and 64-bit editions. ~ 1.25 MB(*)
for MacOS 10.2 or later (PPC/x86) ~ 860 KB

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