Otter - Remember, search, and share your voice conversations
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Plutoview - Shared browsing solution for remote group collaboration
Anchor CMS - Free and lightweight blogging system
Dead Simple Screen Sharing - Simple screen sharing and audio conferencing software.
Textpattern - Textpattern is an elegant content management system that is free, open source software.