很强大的基于ASP.NET + C#的论坛、blog、相册开源系统Community Server 2.0 是学习ASP.NET的优秀代码-Very powerful ASP.NET+ C#-based forum, blog, open source system PHOTOs Community Server 2.0 is an excellent study ASP.NET code

Yet Another Forum.net是一个开源的论坛或公告板系统运行ASP.NET的网站程序。它是用ASP.NET编写的，它使用一个MS SQL后台数据库。 -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.

开源论坛系统源码,基于.net framework 4.0开发，是国外的一款有名的开源系统-Open source forum system