iMark
iMark is an application wich helps students to archive their marks. Not only is it possible to store them, but iMark also calculates all averages, displays a diagram and lets students add helpful information to each mark. Just try it out, it's free!

Only for OSX. Download iMark here. New version iMark 3.3!

Hermes
Hermes is a little CMS (conent management system). It lets you do blogs, newspages etc. wit little effort. Still in development but quite functional.

Only for OSX. Download Hermes here.