The Web 2.0 Guru wiki is worth a visit. With the top 10 Web 2.0 tools for classes listed as well as all tools broken down into categories, this is a handy site.

Top 10 Web 2.0 Must Haves for Every 21st Century Classroom

1. Class Blogs – WordPress or Blogger
2. Class Wiki or Website – Wikispaces, Wetpaint, Webnode, Wix, Glogster WikiMatrix – compare and contrast
3. Virtual or a Cloud Office – Docs, Google Docs, Zoho, Thinkfree
4. Online Classroom Environments/Networks/Forums – Ning, Neetz, Lefora Backchannels – tinychat, backnoise, coveritlive
5. Audio Channel – Podcasts or recordings – evoca,podbean, gabcast, gcast, odeo
6. Teacher Tube create a free account for uploading demonstrations
7. Private Videocast or TV Channel – Ustream Mogulus., Youcastr
8. Online Assessment tools – Thatquiz. , rubrics – Tech4Learning
9. Online Grade book –Engrade
10. Online storage – file storage – Box.net Adrive , 4shared, Flickr for pics,

 Web 2.0 categories include:

• Animation
• Assessment and Evaluation
• Blogging
• Charts and Spreadsheets
• Collaboration
• Communication
• Conversion Tools
• Celebration of Success – Award and Certificate Makers
• Desktop Publishing
• Dictionaries/Glossaries/Data
• Digital Storytelling
• Disposable Email Accounts for Site Registration
•  Ebooks or Audio Books
• Games for Education
• Virtual Games in Education
• Global Connections in the Classroom
• Keyboarding
• Mobile Tools
• Multimedia
• Networking and Online Communities
• Note Taking, Concept Mapping and Flow Chart Tools
• Online Interactive Classroom Environments
• Personalized Web Browser Pages
• Podcasting
• Polls/Surveys
• Presentations
• Professional Networks
• Research
• RSS Aggregators
• Search Engines
• Social Bookmarking
• Storage – online storage and for files
• Studying and Help
• Text <>Speech
• The “Tubes”
• Virtual Field Trips
• Virtual Worlds in Education
• Vodcasting – Video Broadcasting
• Web Design
• Webinars
• WebQuests
• Wikis
• Word Processing

Each category has many tools listed and a brief spiel about each one’s strengths or differences. A good place to find the right tool for the job!