Jing

http://www.techsmith.com/jing.html

Jing is great for screenshots or screencasts and share them instantly online by elegant and easy way. Teachers or students can use it to capture anything shown on screen. Free version provides 5 minutes video recording.

Diigo

http://www.diigo.com/index

Diigo is a useful tool to take notes or highlight lines or add bookmarks and then share with others. Diigo is short for”Digest of Internet Information, Groups and Other stuff”. It’s embedded in web browser as a button, so anytime you need it just click the button and diigo will help to remember. Teachers or students can share their highlights, bookmarks or sticky notes to each other and discuss.

Wordle

http://www.wordle.net/

Wordle can abstract any article into a picture according to the frequency of the word appear in it. You can choose your favorite front, color scheme and layout, and then share those pictures with others.

Google docs

https://docs.google.com/#home

Google docs provides easy and free office suite and up to 1 GB total data storage. You can create, edit and share documents, presentations, spreadsheets, forms, drawings, tables and collections online.

Prezi

http://prezi.com/

Prezi is a free and untraditional presentation software. You can add text, pictures, videos on a single canvas, and then pan or zoom in among those objects by amazing way. People from different locations can collaborate on a prezi at same tme.