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
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.