Here is the link to Cassini sources for v2 of ASP.NET / .NET Framework.

New to Cassini v2:

• Cassini v2 uses new ASP.NET v2 hosting APIs (System.Web.Hosting: ApplicationManager, IRegisteredObject, etc.).
• Cassini v2 does HTTP listenning in the default app domain (unlike Cassini v1 that did it from worker app domains). This provides a more robust app domain unloading story.

Notes:

• Cassini v2 is a sample code on how to host ASP.NET. EULA is included in the package.
• These sources are close but not identical to ASP.NET Development Web Server that is shipping as part of Visual Studio 2005.
• Cassini v2 requires v2.0 RTM .NET Framework. It will NOT work with v2.0 beta2.

Please report any bugs and comments as replies to this post.