Open-source password manager for OS X I am looking for a password manager that works on iOS and OS X (and syncs passwords between those) that is open-source.

Currently, I use mSecure on my iPhone, but I would like to switch to an open-source option.
Most notably KeePassX (port of KeePass) is released under the terms of the GNU General Public License.

It doesn't have a direct port to iOS, but the database format is standard across KeePass-family and you can use another client for iOS, like MiniKeePass (also GNU General Public License).