Please see the Seam FAQs in this site, or the Getting Started page: http://www.seamframework.org/Documentation/GettingStartedWithSeam
Basically you can use most JEE5 servers out there (WebSphere, WebLogic, GlassFish, OC4J, etc.), and Tomcat 5.5 and 6. When deploying on servers different from JBoss AS, you do need to do some tailoring, as explained in the page linked.
Yes i got,
i will work in tomcat5.5 and sun glass fish.