Popular Web 2.0 and related Technology Tools (useful for K-12 schools and teachers):
1. E-Portfolio and Web Page Tools: (Personal webpage/portfolio: Google Sites: http://sites.google.com (like a wiki and a homepage—easy to change)
2. Document collab (Google Docs; http://docs.google.com/ and Google Presentations)
3. Share Docs and Slides (SlideShare: http://www.slideshare.net/). Online presentations.
4. Group collaboration (Google Groups: http://groups.google.com/, Yahoo Groups)
5. Wiki collaboration (Wikispaces: http://www.wikispaces.com/, Wetpaint: http://www.wetpaint.com/, PBworks (formerly PBwiki: http://pbworks.com/)
6. Blogging (Blogger: https://www.blogger.com/start, Word Press: http://wordpress.org/, Live Journal: http://www.livejournal.com/); Compare Blogger & Word Press: http://pulsed.blogspot.com/2007/07/blogger-wordpress-chart.html
7. Social networking (Facebook, Ning) e. g., Classroom 2.0: http://www.classroom20.com/; School 2.0: http://school20.ning.com/; Ning in Education: http://education.ning.com/
8. Online photo sharing (Picasa: http://picasa.google.com/, Flickr: http://www.flickr.com/, Facebook: http://www.facebook.com/, etc.)
9. Podcasting (Audacity for PC: http://audacity.sourceforge.net/ and Garage Band for the Mac); also Gabcast (http://gabcast.com/) to create audio podcasting by using your phone or VoIP. Many podcasts in Education Podcast Network: http://epnweb.org/.
10. Shared online video: YouTube, TeacherTube (http://www.teachertube.com/), SchoolTube, TVLesson, NASA TV, Link TV (http://www.linktv.org/), YouTube Edu.
11. Concept Mapping tools (Gliffy, Mindmeister, Bubbl.us (http://bubbl.us/)
12. Social bookmarking (del.icio.us: http://delicious.com/), trailfire: http://trailfire.com/)
13. Finding online media (Odeo: http://odeo.com/)
14. Bookmarking websites and collaboration (Diigo); e.g., math resources: http://groups.diigo.com/groups/teaching-middle-school-math and science resources: http://groups.diigo.com/groups/teaching-middle-school-science), etc.
15. Communication (Skype: http://www.skype.com/, Google Talk: http://www.google.com/talk/
16. Adding audio to Web content (Voice Threads: http://voicethread.com/)
17. Adding Audio to email (YackPack: http://www.yackpack.com/)
18. Screencasting to capture and instantly share your screen (Jing: http://www.jingproject.com/, Screenr: http://screenr.com/); with Screenr you can save your project as mp4 (ready for ipod/iphone), link to Twitter, post product on YouTube.
19. Collaborate on Math and Science Problems Online (Math Calculators like Instacalc: http://instacalc.com/ and http://my.instacalc.com/)
20. Webstreaming (UStream: http://www.ustream.tv/)
21. Video Creation (e.g., film a lecture or presentation by yourself from your laptop or desktop Web cam); VideoSpin: http://videospin.com/Redesign/) Windows Movie Maker: http://www.microsoft.com/windowsxp/downloads/updates/moviemaker2.mspx
22. Synchronous web conferencing (Vyer: http://vyew.com/site/, Dimdim: http://www.dimdim.com/; both are free up to 20 users; Dimdim is also open source)
23. Virtual Worlds: Second Life: http://secondlife.com/; Global Kids: http://globalkids.org/?id=30
24. Free Course Management Systems (Moodle: http://moodle.org/); Note: there is also free hosting of Moodle for basic installation: http://ninehub.com/
25. Collaboration and Kids as Researcher Sites (BioKIDS, GLOBE, iEARN, ePals, etc.)
26. Free and Open Access K-12 Contents and Courses:
a. Curriki: http://www.curriki.org/xwiki/bin/view/Main/WebHome)
b. National Repository of Online Courses: http://www.montereyinstitute.org/nroc/
c. Hippo Campus: http://www.hippocampus.org/
d. MIT Highlights for High School: http://ocw.mit.edu/OcwWeb/hs/home/home/
Note: An alternative site with many free applications like Google is Zoho: http://www.zoho.com/