Firefox
in 345 toolboxes Firefox is the popular open source web browser from Mozilla
Skype
in 228 toolboxes Free/cheap Internet telephony and handy IM tool.
OpenOffice
in 203 toolboxes Full-featured open source office productivity suite, featuring word processor, spreadsheet, presentation, drawing and database packages; free MS Office replacement.
Ubuntu
in 136 toolboxes User-friendly Linux distribution.
The Ubuntu promise:
* Ubuntu will always be free of charge, along with its regular enterprise releases and security updates
* Ubuntu comes with full commercial support from Canonical and hundreds of companies from across the world
* Ubuntu provides the best translations and accessibility features that the free software community has to offer
* Ubuntu core applications are all free and open source. We want you to use free and open source software, improve it and pass it on.
Thunderbird
in 137 toolboxes Mozilla's Open Source email client
PuTTY
in 71 toolboxes A Free Telnet/SSH Client
