It's called cscope.el of course
It's called cscope.el, not csope.el.
Emacs users can use csope.el
There's a cool emacs package which interfaces to csope. It's called csope.el and it's in the elisp archives (http://www.leo.org/pub/comp/usenet/gnu.emacs.sources/).
A tool for securing DNS communications between a client and a DNS resolver.
A polyhedral extraction tool (PET).