Open Source Software (a list)
This list of open source software looks quite comprehensive.
Internet Task Management System
I found ITMS the other day on SourceForge. I thought it was pretty neat with one drawback: the interface needs a lot of help. It would be a good way to test the usefulness of a task assignment and management system in your business environment.
I hadn’t heard of Gaim before today, essentially it is a chat client that integrates with all of the major services (very similar to Trillian except it is an open source project).
PhotoFrame over at SourceForge looks promising. You can essentially make a photo gallery by simply uploading your images to your site via ftp. The system will do everything else including resizing and creating thumbnails for you.