Homepage: http://code.google.com/p/csense
Updated:
Coding assistant front-end
Generic Code Sense frontend for assistance during coding. Install it by requiring one of the language-specific frontends. F1 shows help for the symbol at point. C-F1 goes to the definition (using the etag ring, so you can use M-* to jump back) C-. completes the symbol at point Tested on Emacs 22.