Horde is an open source project that consists of an application framework and a smattering of applications in various states of development. The community is very keen on outside help and it was fun getting into the project, under the hand of Matt Selsky.
IMP - a very mature and feature rich webmail client that is used by small to large organizations. I’ve been contributing random bugfixes and small features and getting paid for it.
Qonos - a non-Horde core application, Qonos will be similar to Horde’s Kronolith but be more part-time worker timesheet oriented. This is partially being developed for another programming team I’m involved with. Wrong. This idea was ambitious, but not pursuable for the timeframe involved. I still hope to make a homebrewed Horde app.
Every now and then I get the urge to work on something that isn’t associated with other external forces. Some people call this creativity. I call it being a geek.