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.