This is open source my friend - it is all a click away
Check out the RichFaces project page, top menu, Source Code - https://www.jboss.org/richfaces/sourcecode.html
Also for a description of 3.3.X repo - see http://community.jboss.org/wiki/RichFacesRepositoryStructureOverview
For Seam take a look at seamframework.org download page - http://seamframework.org/Download near the bottom.
Yes, I know it is open source. The reason I asked this question because I have seam jar files, which only have class files inside it. Just I looked inside the seam downloaded package, it has src folder inside it, which has all the java files.
Initially i just thought of changing the jar file back in to java file.
Thanks for the reply.