Mac OS

Bee Documents, Inc.
Software for timeline creation, document presentation, bates stamping, and PDF document conversion.
http://www.beedocuments.com/software/Free/

Cellulo
Movie player for Mac OS X. Its key features are: full screen, playlists, resizing, subtitles, and a user-friendly interface.
http://www.cellulo.info/

David Stark aka Zarkonnen
Personal website with several Mac utilities as well as a game, Asteroid Storm. It also features a gallery of computer-made pictures and photography.
http://www.zarkonnen.com/

Davtri
iRot13, Davtri Haiku Generator, Davtri Insult Generator, Idea Tracker, Davtri Fingerprinting HTTP Scanner, Davtri Fingerprinting Port Scanner, PyWeather, dWeather, httpScanner, IP to Decimal, WhatPorts, Elizabethan Insulter, and jTranslator.
http://www.davtri.com/

Desktop Manager
Free (open-source) virtual desktop manager for Mac OS 10.3.
http://desktopmanager.berlios.de/

Digital Cow Software
Supporting Weblock and Wraparound for OSX.
http://www.digicowsoftware.com/

Doug's AppleScripts
Written for use with Apple's iTunes MP3 player and for SoundJam from Casady and Greene.
http://www.malcolmadams.com/itunes/

File Sequencer
File renaming and renumbering utility for Mac OS X.
http://johnnarun.com/file_sequencer/

FileType
An application to change the file types (type- and creator-codes) of files. Good for OS 8.6 - OSX.
http://www.frederikseiffert.de/filetype/

FreeMacWare
Reviews of select free applications for the Mac.
http://www.freemacware.com/

Jeb-Soft
Ejector, NetDraw, Last Start, Perpetual Calendar, Converter+, and Search URL. Site in French and English.
http://www.jeb.com.fr/index.shtml

Macfreewares.8m.com
Only freeware. Only for Macs. Updated daily with read me files and screenshots!
http://macfreewares.8m.com/

Mactracker
Free program that attempts to list every Macintosh ever built and the hardware specifications of each machine.
http://mactracker.dreamhosters.com/

MKD software
Software development company offering several utilities.
http://www.mkd.cc/

myRibosome
Analyses genetic data and converts it to musical parameters. This application acts like a ribosome in a cell that translates the bases of the incoming mRNA into aminoacids that form the components of the folded protein chains. Musical style: House/Dub/Abstract
http://swiki.hfbk-hamburg.de:8888/MusicTechnology/myRibosome

Niftee-Tron
Games, puzzles and icons.
http://niftee-tron.com/

NoName Scriptware
Free AppleScripts to improve the Mac user experience.
http://www.nonamescriptware.com/

OOOk Apps
Producer of TwiddleService, used to fix chronic typographical errors, OOOkTunes, used to display information on the currently playing track in iTunes (artwork, rating, title, artist etc.) and Virtual Pet Rock.
http://www.oookapps.nl/

Panda Systems
Freeware and shareware, specializing in desktop interface enhancements. Mailing list.
http://www.pandacorner.com/

Rainbox
Program which uses palette animation to make your drawings appear as if they're moving.
http://www.axlrosen.net/rainbox.html

Silver Software
Freeware games and utilities.
http://www.silversoftware.ca/

The Talking Moose
A desktop diversion for the Mac that has a Moose pop up on your screen periodically (several different animations are available), and have it say something funny, witty or utterly useless using Speech Synthesis. Available for MacOS 7.1-9.x and MacOS X 10.1 or better.
http://www.zathras.de/angelweb/moose.htm

WhatRoute
Offers traceroute, ping, whois, network sniffer, dns query tool for MacOS 9 and MacOS X.
http://www.whatroute.net/

Wooden Brain Concepts
Palm and Mac freeware and shareware.
http://home.earthlink.net/~lryter/

Xtralean Software
Makers of ImageWell an imaging application that lives in the menu bar. Product information, support, and contact information.
http://www.xtralean.com/