Wikipedia

A wiki is a website on which users collaboratively modify content and structure directly from the web browser. Wiki enables communities of editors and contributors to write documents collaboratively.

LinkedIn

LinkedIn is a social network for professionals. People using LinkedIn can be marketing executives at a major company, business owners who run small local shops or even students looking to explore future career options.

E-mail

E-mail (electronic mail) is used to exchange messages between individual or groups of people. E-mail messages are sent via the Internet. ‘Servers accept, forward, deliver, and store messages.

Edmodo

Edmodo is an educational platform for the first 12 years of schooling (kindergarten – high school) with scalable features that allows teachers to communicate and collaborate with other educators and students to create a more interactive teaching environment (can be best thought as a digital classroom).

Blogger

Blogger and in extension Blogspot (that was bought by Blogger) is an open source tool owned by Google, which serves as a free platform for creating one’s own blog and publishing articles, information, personal posts and webpages to as much a restricted population as the blogger chooses. It is one of the oldest established, free, secure tools of its kind and its strong suit is its strong security credentials