SQL Effects Community Edition - Compare Stored Procedures
Nice piece of software. My colleague recommended me this. Well I had a little trouble in comparing stored procedures one by one for 2 databases. This software came in handy. Of course you can compare functions, users, etc.
Give it a try. There is a community edition which you can use it for free with no evaluation period :)
The only issue is that it is not supported in Windows Vista. I had set the compatibility mode for this software to used windows xp sp2, but yet it was not able to work.
http://www.sqleffects.com/