A 100% Java client for the DICT protocol (RFC2229). This provides access to lexicons, translating dictionaries, thesauri and similar database over a TCP/IP protocol.
NiMC provides an Instant Messaging server and client that runs on a custom protocol that is implemented in python. The project was written as a learning experiment by its author, to get experience with TCP/IP. Great example of how to do TCP/IP wrong
Shared Questionnaire System(SQS) is a full-functional Optical Mark Reader(OMR) form processing system implemented in Java-Swing, XSL-FO and AJAX with straightforward GUIs. It is aimed at developing social platform to share knowledge about questionnaire.