OpenGL: what version (on windows)?

Sometimes strange things pop up and you have no clue as how to get fast to a good answer.

What is the current version of OpenGL your machine has installed?

No answer yet.

Update:

There is a nice blog entry about OpenGL Extension viewer:

http://blogs.esri.com/esri/supportcenter/2012/03/15/what-version-of-opengl-do-i-have-and-do-i-have-the-latest-drivers-for-my-system/

2 tools, which tell you what version you have

•  GPU Caps viewer    http://www.ozone3d.net/gpu_caps_viewer/
• OpenGL Extension Viewer http://www.realtech-vr.com/glview/

But some info from http://www.opengl.org/wiki/Getting_started

Without drivers, you will default to a software version of OpenGL 1.1 (on Win98, ME, and 2000), a Direct3D wrapper that supports OpenGL 1.1 (WinXP), or a Direct3D wrapper that supports OpenGL 1.1 (Windows Vista and Windows 7). None of these options are particularly fast, so installing drivers is always a good idea.

Which means if you have no drivers installed you end of with OpenGL 1.1 at least on Windows.

What tools could provide some answer? I mean from a standard Windows 7 installation (no additional software)?

System information 

On W7->Start->All programs->Accessories->System Tools->System Info

%windir%\system32\msinfo32.exe


Does not look like it.