Open Source Web Application Framework for the Microsoft ASP.NET platform.
An open source Web Portal Framework / Content Management System application written in ASP.NET / C# for the Windows OS platform and Linux MONO.
A free webmailer for .NET
An attempt to write a full open source bot better than eggdrop, with every single feature, but better.
Extendable CRM solution with focus on handling large quantities of leads from different sources in a distributed environment.