Open GIF files less than 1 second. GIF Viewer is a little software which lets you open GIF files less than 1 second! It's bad that Windows 7 has no software which can show GIF files.
Only the Internet Explorer can do it. But it needs so much RAM.
To use GIF Viewer everytime you open a GIF file, right-click on a GIF file and click on Properties. Click on Change next to Opens with. Wait for a new window, then click on Select.
Now search GIFViewer.exe in the destination-path (C:\Program Files\GIF Viewer) and click OK.

Requirements:
* NET Framework

The license of this software is Free, you can free download and free use this animation software.