A Bitcoin client for the Mac, written 100% from scratch in Objective C.
This is a total rewrite of the bitcoin codebase. It is not cryptographically secure, because no one else has looked at it. The goal was to create a complete client and then get code review. That hasn't yet happened.
General, and mine, interest in Bitcoin has fallen off over the last few years. Despite that, I think OS X needs and deserves a first-class Bitcoin client.
The main goal for the project was to have a client running persistently in the OS X menu bar that would alert you when you received a payment and let you quickly pay other addresses.
It only got so far as joining the network.
OMG where to start?