K-12 Great for a class/ group collaboration in and outside of the classroom and great for personal use! Con: District permission, public to everyone, anyone can add or delete information.

K-12 Make phone calls, video chat, can be used for classroom activities and personal use. Con: Must register and download program, and new district permission.

K-12 Secure online class forum for teachers and students to extend learning outside of the traditional classroom. Con: Probably need your district's permission.

k-12 LiveBinders is your 3-ring binder for the web. ... Best of all, it's free! links in a binder.

K-12 Evernote works with nearly every computer, phone and mobile device out there. Students and teachers can take notes on anything and everything. It's FREE! Con: You must register for the site to be able to use it.