Tomcat is "only" a Servlet container. Application servers typically offer more components and services like transaction handling or an EJB container. Glassfish is just one well-known open source application server, but there are many other application servers as well.
but then what's Sun Java System Application Server ?
posted 9 years ago
Deepak Bala wrote:Here is a quote from sun.com that should clarify
The Sun GlassFish Enterprise Server (formerly Sun Java System Application Server) is a comprehensive support offering for GlassFish, the leading open-source...
Actually this is what made me confused when I saw it in sun site. I'm using some servlet tutorials from SAI and I'm supposed to use Sun Java System Application Server but when I searched for that only GlassFish is there and I saw this quote