Twitter Free microblogging tool

Pinterest Collecting, organizing, and sharing things you love

Remind 101 Communicate via text message and email to parents and students

Live Binders Organize your work in binders stored on the web. Use your binders to present lessons. Great use of tabs.

Screencast-o-matic Create screencasts

Blogger Create your own blog website

Weebly Create easy websitesPrezi Cloud based presentation software.

Teacher Tube You Tube but for educational purposes.

Evernote Collect all of your ideas, experiences, thoughts and memories into an always-accessible place 

Dropbox The easiest way to store, sync, and, share files online