Web 2.0 generally refers to online tools that encourage collaboration and are user centered.  Most are not platform specific and are available if the user has access to the Internet.  This is a collection tools has been identified as useful for teachers and students in the development of curriculum and student projects.  This list is only a small representation of available tools.
Animoto for educators produces videos from photos, video' and music	Prezi is a web-based presentation tool.
Audacity is an online multitrack audio editor and recorder.	Quizlet is an engaging site for studying vocabulary.
AudioOwl - This is a great source for free audio books.	Scoreboard keeps score using an interactive white board.
Certificate Street creates certificates for every occassion.	Skype allows users to make voice calls over the Internet.
Bubble.Us is an online mind mapping tool.	Slideshare is for sharing presentations & documents.
Comic Creator creates printable comic online.	Storybird uses collaborative storytelling by two or more people.
Create a Graph	Tagxedo site for creating word clouds in an image shape,
Del.ico.us is an online social book marking site.	Tapped In - online community of K-16 teachers, staff, and researchers.
Dropbox uses cloud computing to enable users to store and share files and folders.	Teacherconnecting is a place for K-12 teachers to find other teachers for cross-classroom collaboration.
Evernote allows users to collect, sort, tag and annotate notes and more.	Teampedia is a collaborative site for team building and ice-breakers
FillAnyPDF is a website where you upload your PDF form and link to it so other people can fill it out and sign it online.  NO software needed.	Tiny url converts long urls to a short url.
Flicker is a way to store, sort, search and share your photos online.	Twitter is a social networking and microblogging service.
Google Docs allows for collaboration on word and excel documents	Visuword is an online graphical dictionary.
Google Earth ( includes Sky, Moon, and Mars)	Voicethread is Web-based digital-storytelling application that allows users to share their stories through audio, images, etc.
Google Sites allows for creation of web pages.	Voki enables users to express themselves on the web in their own voice using a talking character.
HowJSay is an online English pronunciation dictionary.	Wallwisher  allows people to express their thoughts on a common topic.
I Keep Bookmarks  is an online social book marking site.	Wetpaint is a wiki hosting site.
Jing allows for screen casting.	Wikispaces is a wiki hosting site.
Kerpoof multimedia software is used by kids to create original artwork, animated movies, stories, greeting cards and more.(Scholastic)	Windows Live Sky Drive (25G of storage)
LameLib is needed to create a podcast using Audacity.	Wordle creates word clouds from user input or rss feed.
Microsoft Office 2010 Live	Wordpress is an open source blog /website publishing application.
Mindmeister is an online mind mapping tool.	ZoomIt is a presentation utility for zooming and drawing on the screen.
Photoshop online editor is an online graphic editor	Goanimation  this is a very easy method of allowing your students to express themselves.  May be used at all grade levels.
Picasa is an online graphic editor and album generator.
Pixlr is an online graphic editor for advanced photo editors.
Pixlr Express is an online graphic editor for beginners.
PortaPortal  is an online social book marking site.