Many OpenGL extensions, as well as extensions to related APIs like GLU, GLX, and WGL, have been defined by vendors and groups of vendors. The extension registry is maintained by SGI and contains specifications for all known extensions, written as modifications to the appropriate specification documents.

The registry also defines naming conventions, guidelines for creating new extensions and writing suitable extension specifications, and other related documentation.

This program displays the vendor name, the version implemented, the renderer name and the extensions of the current OpenGL 3D accelerator.

Supports OpenGL 1.1 to 2.1 and OpenGL 4.1 or superior for OSX 10.9 and superior, including Apple Metal information.

What’s New

Version 6.0.1

Restore compatibility with macOS El Capitan. Other bug fixes.

Ratings and Reviews

SleekWI ,

Used to work until this update.

This app used to work great on My 2011 MacBook Pro. Three Days ago New Update came, Installed, now there is no Window showing, Just shows Menubar. Running MacOS High Sierra. Seems Developer does not check app on all Systems/Machins.

Rater-Hater ,

Not working anymore

Hello! It doesn’t want to launch after updating. OS X El Capitan

Kokubu ,

It works now! I just wish it worked better.

I figure I need to write a new review, because the latest version (4.0.8) actually works for me! Great update.

Now, the app itself: there's a lot of data here, but it's not the easiest to use. For example, at the bottom of the "Extensions" tab, there's a round search box, like you'd normally find at the top of a window. Typing in there searches the list of extensions, but it's pretty slow. There's also a (misaligned) "Search" button next to this, and when I click it, it switches to my web browser and seems to open a new tab for each extension shown in the list (in my case, about 100). Yikes! I did not expect that. This is not an isolated case: I found myself saying "I did not expect that" a lot.

The screenshots show OS X 10.6, and that's probably what it was tested against. Not everything looks so great on 10.7+. For example, you can only see 2 pixels width of the scrollbars on the "Extensions" tab. Nothing is completely broken, but it does seem somewhat unfinished.

If you can figure out how to use it, there's a fantastic amount of data in here. Unfortunately, it's not very intuitive, and the documentation is almost nonexistant.


Stephane Denis
16.5 MB

OS X 10.9 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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