Please excuse me for posting this question here as I did not find any other place.

I am looking for project management tool in .NET which is open source (comes with source code for extension/customization).

I googled found few open source project mangement tools like:

1. Redmine but it has source code in Ruby

2. GanttProject but it looks like for individual usage

and lot many but with java source code.

I am using MS TFS and it does have project management capabilites but it is focused on developers/team.

Please suggest.