Web Sticky Notes
Project Status: Dormant- although I may be creating a much simpler version of this project!
Web Sticky Notes is an open-source, web-based interface for organising tasks into swim-lanes. The main application has a very simple task-board with swim-lanes and you can drag and drop the sticky notes between the swim lanes. There is also an admin application for more advanced editing.
You can follow this project on the Web Sticky Notes Codeplex page.