Tenfourbird est build non officiel de Mozilla Thunderbird pour PowerPC Mac OS X.
Tenfourbird utilise changesets de TenFourFox.
Dernière version est 38.9.0.
Il ya aussi un langpack français.
One more v17...
Next stable release is scheduled on v24.2 (I hope so...).
You can check integrity of files by SHA1 hashes. It also signed by OpenPGP key of t_mrc-ct[at]users.sourceforge.jp. The public key could get from here or OpenPGP Keysever.
All Langpacks are not updated since 17.0.4