OpenXP is a multi-net console-mode mail/news application for Windows and Linux and is probably very different to anything you've seen before. It works differently, it looks different and a lot of the terminology is different. It originates from Germany and the user interface and online help are available in English and German. Although the English user interface and online help are reasonably well translated from the original German, lots of work is still required to bring it up to standard.
If you're tired of the same old point and click application interfaces, why not turn the clock back and take OpenXP for a spin.