We use gnupg+vim to share passwords and other secrets among my team. http://www.vim.org/scripts/script.php?script_id=661

To create a new encrypted secrets file, 'vim secrets.gpg'. Vim prompts you to specify recipients from your gpg keyring. Then vim opens a buffer; you write your secrets in the world's greatest text editor.* On write or close, vim prompts for your passphrase and encrypts the file to the recipient keys you specified, saving it as ascii-armored gpg.

Open an existing file with a .gpg extension, and vim prompts for your passphrase, decrypts the file, and opens it in a new buffer. On write or close, it re-encrypts the file to its configured recipients.

For easy sharing and revisioning, we keep these gpg files in a mercurial repository. This gives us a distributed, free, scalable, and reasonably secure solution.

*There's a similar gnupg plugin for emacs, if you're of that heretical religion.

oh, and it also has both mac and pc versions, so the author will never have the mac config problem mentioned w/ das!