Ultra GIF Optimizer - description from Softdepia.com:
Ultra GIF Optimizer is a powerful tool for optimizing GIF images.It can makes your web page load faster,save your server bandwidth charges and disk space!
By using Ultra GIF Optimizer you can:
Reduce the size of GIF images by up to 70%!
Increase the speed of your website.
Save your server disk space.
Reduce server bandwidth charges
Help your visitors to save time and money.
Ultra GIF Optimizer is a "Free to try" program. You can download and try it for an evaluation period.