Mimo is a Usenet browser developed by Golden Frog specifically for the Giganews Usenet service. Mimo is optimized for faster browsing, searching and downloads and features integrated image thumbnail viewing as well as filtering capabilities on text, binaries and images.

Mimo is available for free when you signup for a Diamond plan at Giganews

You can get more information about Mimo at: http://www.giganews.com/mimo/