Software

Software I've found handy 

Software Projects

Rent A Coder 

Scriptlance

GetAFreelancer 

 Designoutpost

 Guru

 Elance

ifreelance 

  

Web Tools

Firefox  free web browser.

Thunderbird free email client.


Image Editing

 

 

Software Development Tools 

AutoIT tiny GUI automation tool

Perl  programming language

PHP  programming language

Java programming language

MySQL database


AntiVirus / AntiMalware

Vet AntiVirus


 Download Tools

Azureus open source Bit Torrent client.

 

 

Office Productivity 

OpenOffice open source

OpenWorkbench project management tool

Copernic desktop search tool


Linux / FreeBSD

KDE desktop environment

 

Sound

Audacity  open source software for recording and editing sounds.

 


 

For more info on  free or open source software, look here:

opensource.org 

Free Software Foundation

SourceForge 

Beginner's note: essentially, you can think of "open source" as "free".