Here are some great sites relating to contemporary learning tools....

ArtRage Freeware Art package
Audacity Open Source audio software
Blogger.com Popular blog-creation site
Bubbl.us Collaborative mindmapping tool
CCMixter Creative Commons licensed sound clips
Creative Commons Search engine
Comics Sketch Web 2 online drawing tool
Connections Article on Wikis and Blogs in the Class
Del.icio.us Shared online bookmarks
Digg What's popular on the Web
Digital Dialogues Informative educational blog
Eclipse Crossword Free interactive crossword
EduWikis Readings, examples, discussions
ePals Classroom Exchange Where learners connect
Freesound Creative Commons licensed music
Guess-the-Google Fun picture game based
Flickr Online Photosharing
Go 2 Web 20 Updated portal to Web 2.0 App's
Juice Open Source Podcatcher
Pivot Terrific tool to teach the basics of animation
Poducate Me Practical solutions for podcasting
Schoolr Online resources all on one page! Nice.
Stellarium is a free open source planetarium
Teacher Tube School-safe videos
Technorati Search engine for blogs
The Levelator Java Applet for improving recorded audio
Tteach Coming soon... Web 2.0 site for teachers
Vixy Online FLV Converter (Perfect for YouTube)
Wiki Books Free collection of open-content textbooks
Wikispaces Create your own!
Wiki Walkthrough Guide to using wikis
Wikispaces for Teachers Secure login facility
WordNet Lexical database (runs as a local application)
Word Web Electronic Dictionary Program
ZuluPad A Local Wiki/Notebook