Computing

Scripting (interpretive) Languages
CGI
Tcl/Tk
Java
Javascript
Perl
Pascal
Python
PHP
HTML
XHTML
 XML

SWIG

Programming with Compiler-based Languages
Modula-3
ANSI/ISO  C/C++
Objective-C
General
Client-Server Software
Apple XServe

Apache
Databases

MySQL

Sun
Oracle

PostGreSQL

Editors (Text and Code)

User Interfaces and Desktops

"GUI's are popular since they make computers and software more user-friendly for neophyte and occasional users. For experienced users however, they are clumsy, require more resources and run slower.  In comparison, command line interfaces run more quickly, require fewer resources and are more suitable for running long batch scripts (written by the user)." - reference

CINT

CDE and KDE

GUI

Gnome
KDE

Project Management

MacOS
Linux
Multi-platform and Miscellaneous

Scheduled Backup

Linux

Change Management (Code, Module, Version, Platform, Release)

Aegis

CVS
(Concurrent Versions System) PRCS

RCS

SCCS

Bug Tracking Systems

Linux

Network Management

MacOS
Linux
Unix

Windows

Multi-platformed

Quality Assurance and Testing

Unix/Linux
Java
Disk and System Performance
MacOS
Linux
Printer and Scanner Support
Hewlett-Packard
Xerox
Epson
Lexmark
Unix
Paper
Ink
Diecuts
Operating Systems
Consulting and Forums
Comparisons and Combinations
BeOS

Linux

MacOS
OS/2
Unix 
Windows
Email Management
Miscellaneous
Scanning and OCR (Optical Character Recognition)
MacOS

Games
Miscellaneous
Office Suites (Word Processing, Presentation, Spreadsheet)

MacOS
Multi-Platformed
Browsers and Email/Newsgroup Management
Apple
iCab
Galeon (Gnome web browser based on Gecko)
Mozilla
Netscape
Opera

Graphics, Digital Imaging, and Printing

Adobe
Corel
Hewlett-Packard

Animation and 3-D

Useability

All

Web Design

Macromedia

NetObjects

Adobe
Site Searching
Client-side HTML
Search Engines
Google
Infoseek

Lycos

Metacrawler
MetaSpy
Yahoo

ZDNet

CyberMeetings

Cryptography

Algorithmic

Quantum

Chipsets

CPUs
Caches

Communications (Ethernet, Telecom, InterProcess)

OpenDOC

Modems
WiFi
Writing and Screenwriting
Linux
MacOS
Music Composition
Linux
MacOS

Download Areas: Shareware, Freeware, Open Code

Linux
MacOS
Unix
Miscellaneous

Books

ePublications

Associations

User and Help Groups

Linux

Apple/MacOS

Apple Web and Retail Stores