Task Coach
Task Coach is a simple todo manager to manage personal tasks and todo lists. It grew out of a frustration that well-known task managers, such as those provided with Outlook or Lotus Notes, do not provide facilities for composite tasks. Often, tasks and other things to do consist of several activities. Task Coach is designed to deal with composite tasks.

It see full features, try it.

GAIM Chat Client
It is a multiplatform tool that can interface with all popular chat systems like hotmail, yahoo, gmail, AOL, …
Imagine you can access all your chat accounts from ons tool. I use it and it is worth trying.
Recently Gaim changed there name to be Pidgin, but everything else is the same.

SVNFeed

SVNFeed is a Python script that creates RSS feeds of Subversion repository logs. Both remote and local repositories can be monitored. It is helpful to use your favorite Feed Reader product/service to watch source code changes.