So I am curious, is there a clear leader in auth tools here, and is it even worth it to code and support for the others anymore? Would an app survive if it simplified itself to a single Authentication mechanism?
Personally, I only use HIVE KEYCHAIN, it's near perfect.
RE: HiveSigner, Hive Keychain, HiveAuth or Enter Your Key On A Site??? (later entry: PeakLock - see update inside about that oversight)