We have released Anti-XSS 3.0 library with SRE (Security Run-Time Engine) on CodePlex and CAT.NET a free static analysis tool for .NET Check out the following link to download the tools from CodePlex and MSDN download site.

http://blogs.msdn.com/cisg/archive/2008/12/15/anti-xss-3-0-beta-and-cat-net-community-technology-preview-now-live.aspx

Thanks!
Anil