FireGPG Add-on for Firefox

FireGPG is an add-on for Firefox which lets you view, decrypt & encrypt emails in webmail programs such as Yahoo & Gmail. You'll need to instal GnuPG first & currently the FireFTP add-on isn't compatible with FireGPG, so you can't have them both installed at the sametime.

Babel Fish Translation

Babel Fish is a useful site for translating text from foreign languages into English or vice-versa.