CC Mode is a GNU Emacs and XEmacs mode for editing C and other languages with similar syntax; currently C++, Objective-C, Java, CORBAs IDL, Pike, and AWK. It is a standard package in both GNU Emacs and XEmacs.
Spear is a extension of Pike language . Spear allow you put inline C/Java code in Pike, and exchange data cross languages. In additional, Spear can transfer thread to system process, running on multiprocessor, or even cross machines over SSH.
open-sTeam is an open source environment for the creation and maintainance of virtual knowledge spaces, providing a wealth of mechanisms to support collaborative learning and working processes.