The premier free, open-source browser. Tabs, pop-up blocking, themes, and extensions. Considered by many to be the world’s best browser.
IM – Instant Messaging
Connect to multiple IM accounts simultaneously in a single app, including: AOL IM, MSN, and Jabber. Beautiful, themable interface.
Quicksilver lets you start applications (and do just about everything) with a few quick taps of your fingers. Warning: start using Quicksilver and you won’t be able to imagine using a Mac without it.
Powerful spam filtering, solid interface, and all the features you need.
Uncompress RAR, 7zip, tar, and bz2 files on your Mac. Many new Mac users will be puzzled the first time they download a RAR file. Do them a favor and download UnRarX for them!
DVD ripper and MPEG-4 / H.264 encoding. Very simple to use.
Very nice, native RSS client.
Solid cross-platform RSS client.
A simple, easy to use filesharing program. Gnutella network.
Soulseek filesharing for Mac, in a simple, solid client.
Very nice torrent downloader.
Running Windows Software on Macs
Run Windows programs on your Intel Mac at near native speed. Works on G4 / G5 Macs too, but much slower.
Solid podcasting client.
Video Player, Torrents, Podcasting
Beautiful interface. Plays any video type (much more than quicktime). Subscribe to video RSS, download, and watch all in one. Torrent support. Search and download from YouTube and others.
A great “SIP” client. Call regular phones from your Mac. 100% free and open source.
A “peer-to-peer” digital currency so you can buy things without paying transaction fees.
Video Converter, iPhone Converter
Miro Video Converter
Plays more video files than most players: Quicktime, AVI, DIVX, OGG, and more. Pretty good interface.
The interface and buttons are not as nice or as Mac-like in feel, but it may play even more video files than VLC.
A plugin that allows quicktime to play additional video formats. (Included in Democracy Player.)
Copy music off your iPod in the finder, like a regular disk drive.
CD / DVD Burning
CD and DVD Burner. Burn any video to a disc that plays in your DVD player!
Word Processing / Office Suites
Big, full featured suite of tools for word processing and spreadsheets. Compatible with and a free replacement for Microsoft Word, Powerpoint, and Excel. Friends don’t let friends pay for Microsoft Office.
A word processor. Leaner and quicker than OpenOffice. Compatible with Microsoft Word documents and OpenDocument Format.
The best wireless scanner for Mac. Find wireless access when you’re on the go.
Simple sound recording tool.
Graphics, Photo, Publishing
Photo editing application that rivals Photoshop in features.
An easy way to fill-out (or sign) PDFs that Preview can’t edit.
Vector graphics application (requires X11).
Desktop publishing. Complicated install, but a nice app.
FTP / SFTP
Very good all-around ftp program.
Simple, fast FTP, with a focus on “advanced queuing”.
Not as polished as Cyberduck (and only for SFTP) but has a side by side interface showing your files and the remote files.
HTML / Text Editing
Visual tool for making websites (WYSIWYG html editor), comparable to Dreamweaver.
Great IRC client.
A cross-platform IRC client that’s free and open source.
A visual development tool for building great-looking web and cloud applications.