SpringSource makes money from selling support for Spring Framework and related tools, lately they've been promoting their own app server (built on top of Tomcat

SpringSource makes money from selling support for Spring Framework and related tools, lately they've been promoting their own app server (built on top of Tomcat with extra monitoring stuff built in) and IDE; so they are more than just a popular framework. But this is a very interesting acquisition. I don't think many people would have ever dreamt of this team-up.