Student Tools:
SAGE: Open Source Mathematics Softwarehttp://sagemath.org/
Make a bibliography. It's free, easy and OttoMatic
http://ottobib.com/
Flesh produces two scores: the Flesch-Kincaid Grade Level and the Flesch Reading Ease Score.
http://flesh.sourceforge.net/
Massive free software links
http://downloadpedia.org/Open_Source_Alternative_to_Commercial_Software
FOSS windows (free software)
http://www.opensourcewindows.org/
Free online file conversion
http://www2.zamzar.com/
57 Useful Google Tools You’ve Never Heard Of
http://www.collegeathome.com/blog/2008/06/18/57-useful-google-tools-youve-never-heard-of/
OpenEducationDisc
http://www.theopendisc.com/education/
SchoolForge
http://www.schoolforge.net/
FreeMind - free mind mapping software
http://www.c4lpt.co.uk/Top100Tools/freemind.html
Software Essentials for the Modern Educator
http://www.assiniboine.net/user/staff/albertsc/software_essentials-2.htm
ZOHO online tools
http://www.zoho.com/
CiteULike is a free online bibliography manager. Register and you can start organising your references online
http://www.citeulike.org/
Free Word Alternative (Open Office)
http://www.openoffice.org/
jMemorize (free flash cards)
http://jmemorize.org/
Notely (schedule, calendar, note-taking, homework planner and more)
http://www.notely.net/
FSF (free software foundation)
http://directory.fsf.org/
Pauker (flash cards)
http://pauker.sourceforge.net/pauker.php?target=index&lang=en
powerpoint tutorial
http://www.actden.com/
Mnemosyne Project (flash cards)
http://www.mnemosyne-proj.org/
Powerpoint help
http://educationalsoftware.wikispaces.com/Powerpoint
Freeware and Open Source Software
http://foss.librarianchick.com/
Freeware Home
http://www.freewarehome.com/
MAC software
http://web.mac.com/simon_elliott/simon_elliott%40mac.com/Home.html
Biblio Generator
http://www.bibme.org/
Easy Bib
http://www.easybib.com/
bravenet.com