Adium - Freeware
Adium is a fast and free instant messaging client which supports AIM, ICQ, Jabber, MSN, Yahoo!, Google Talk, Yahoo! Japan, Bonjour, Gadu-Gadu, QQ, Novell Groupwise, SIP/SIMPLE (Text), and Lotus Sametime. Adium supports beautiful WebKit message display, tabbed messaging, encrypted chat, file transfer, and more. Give it a try; you won't look back.
Requirements: OS X 10.4 or later
BumperCar 2 - Demo
BumperCar 2 is a Mac OS X Web browser for kids. It offers unparalleled content control and customization features, making it the most powerful Web browser for concerned educators and parents on the Macintosh.
Requirements: OS X 10.4 or later
Chax - Freeware
Chax is a collection of minor modifications and additions that make using Apple's iChat more enjoyable.
Requirements: OS X 10.1.5 or later
Cyberduck - Freeware
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such as Spotlight, Bonjour, Keychain and AppleScript are built-in.
Requirements: OS X 10.5 or later
Firefox - Freeware
Firefox is a web browser that empowers you to accomplish your online activities faster, more safely and efficiently than any other browser, period. Built with Tab browsing, popup blocking and a number of other seamless innovations, Firefox stands out ahead.
Requirements: OSX 10.4 or later
Thunderbird - Freeware
Thunderbird is a full-featured email, RSS and newsgroup client that makes emailing safer, faster and easier than ever before.
Requirements: OS X 10.4 or later