Mediawiki for documentation and "scratchpad" stuff, notes, product plans, etc. Bugzilla for more tactical "todo" stuff. Note that my Bugzilla usage is such that

Mediawiki for documentation and "scratchpad" stuff, notes, product plans, etc. Bugzilla for more tactical "todo" stuff. Note that my Bugzilla usage is such that "items" are not necessarily "bugs". Some are, in fact, actual bugs, but I use it as a more general purpose "todo list" and not just a bug tracker. SuiteCRM for managing leads, contacts, marketing campaign stuff, etc. Actual code is, of course, in Git and for now at least uses Github.