An open-source, python-based, wallet-management application for the Bitcoin network.
At the alpha-level stage, Armory is a proof-of-concept release. It is very resource-intensive and thus will not be usable by everyone. The beta version of the project is being crowdfunded.
Available for Windows and Linux. Armory can be built for OS X but does not (yet) have OS X binaries.
Armory is licensed under the AGPL.