JSDK (Java Servlet Development Kit) is a package containing all the classes and interfaces needed to develop servlets. JSDK also contains a web server and servlet engine to test your creations.

SIP Servlet Defined in Java Specification Request 116, the SIP Servlet Specification provides a container-servlet programming model for SIP applications.

The upcoming Servlet 3.0 specification, which passed public review in January 2009, is a major release with important new features that will change the lives of Java Web developers for the better.