项目 网址 简介
The Rainbow project is an open source initiative to build a comprehensive content management system using Microsoft's ASP.NET and C# technologies.
Data Access Application Block  
Iris Iris是为了处理Web页面装饰和布局管理的框架,它的设计思想基于GoF 的decoraotr设计模式。Iris分离页面正文和布局装饰的部分,使得Web页面更容易被测试和维护。
Community Server  
FCKeditor This HTML text editor brings to the web many of the powerful functionalities of known desktop editors like Word. It's really lightweight and doesn't require any kind of installation on the client computer.
NUnit Unit-testing framework for all .Net languages. Ported from junit, see
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.
NAnt NAnt is a free .NET build tool. In theory it is kind of like make without make's wrinkles. In practice it's a lot like Ant.
ASP.NET Starter Kit The ASP.NET Starter Kits are six sample ASP.NET applications that provide code to accomplish common Web development tasks. Each sample is complete and well-documented so that you can use the code to kickstart your ASP.NET development projects today.
Spring Framework .NET
A .NET application framework inspired by the Java based Spring Framework

Paint.NET Paint.NET is image and photo manipulation software designed to be used on computers that run Windows XP or 2000.
NDoc NDoc is an extensible code documentation generation tool for .NET developers.

NHibernate A .NET port of the excellent Java Hibernate ( relational persistence tool.

iBATIS.NET DataMapper iBATIS.NET has joined the Apache Software Foundation! Please visit us at
Personal .NET Portal
 MagicAjax.NET - AJAX Framework  A framework that provides AJAX technologies for web pages created with ASP.NET. It allows developers to easily integrate AJAX support into their pages without replacing the ASP.NET controls and/or writing javascript code.
Ajax.NET Professional Ajax的另外一种实现
FileCopier FileCopier is a tool to generate a batch of text files from an existing file(template). Use to generate similar codes/test cases/xml files/text etc.