Here's a nice article on how to get a Seam application up and running in Net Beans.http://weblogs.java.net/blog/bleonard/archive/2006/05/trying_out_jbos.htmlThere's not special Seam support, but it does let you do basic Seam development in that environment. I'd be quite interested to get some feedback from anyone who tries to do Seam work in Net Beans.