AspectSharp - Aspect# (pronunced as AspectSharp) is a free AOP ( Aspect Oriented Programming ) framework for the .NET Framework, it uses Dynamic Proxies and XML configuration files as basis.
ndCMS - ndCMS is a content management system written in C# that features a user manager, file manager, a WYSIWYG editor and built-in http compression (for those who are not running at least IIS 6 and/or don't have access to modify your IIS settings directly and/or those who don't want to spend a small fortune on a third party HTTP Compressor). The goal of ndCMS is to provide a quick and easy way to deploy a .net website while saving you time and money.
YetAnotherForum - Yet Another Forum.net is a opensource discussion forum or bulletin board system for web sites running ASP.NET. It is ASP.NET based with a MS SQL backend database.
StructureMap - StructureMap is a lightweight Inversion of Control (IoC) Container written in C# for .NET development. StructureMap can improve the architectural qualities of an object oriented .NET system by reducing the mechanical costs of good design techniques.
log4net - log4net is a tool to help the programmer output log statements to a variety of output targets. log4net is a port of the excellent log4j framework to the .NET runtime.
CSharp Email Server - The C# Mail Server is a C# port of the Java Email Server (JES). JES is an established email server targeted at small centrally maintained installations.
NetCvsLib - NetCvsLib is a CVS client written entirely in C# for the .NET platform. It is implemented as an assembly, and thus can easily be incorporated into other projects.
NVelocity - NVelocity is a .Net-based template engine. It permits anyone to use the simple yet powerful template language to reference objects defined in .Net code.
Maverick.NET - Maverick.NET is a .NET port of Maverick, a Model-View-Controller (aka "Model 2") framework for web publishing. It is a minimalist framework which focuses solely on MVC logic, allowing you to generate presentation using a variety of templating and transformation technologies.
SharpWebMail - SharpWebMail is an ASP.NET Web Mail application that is written in C#. It uses a POP3 server as the mailstore and sends mail through a SMTP. It is very simple to configure (Only a few settings in the web.config file). You can compose HTML messages, search your inbox, read complex mime messages and much more.