http://zopler.com/
Zopler is a virtual community that allows its members to collaborate on stories. A member can start a story by simply titling it and writing anywhere from a single word to 1000 characters. Then another member can pick up where the story left off, and add on to it, then another, and so on. The stories are visible to all members of the Zopler community, and any member can contribute to each story if the original creator makes it public. There is also an option where you can set stories so that only specific people can contribute to them. Members can also invite their friends to join so that they can work on a specific story together.
http://mylanguageexchange.com/
My Language Exchange is a website designed to allow its users to learn a second language by connecting individuals who want to learn each other's native language. Partners can practice each others languages in a variety of ways, including corresponding through a pen pal system, text and voice chatting, and word games such as hangman. The language exchange community has members from over 133 countries practicing 115 languages.
http://www.edmodo.com/
Edmodo is a secure social learning platform that allows teachers and students to collaborate in real time. Teachers create a group that has a special code that they give to their students in order to access their page. On this page, teachers can create discussions, share internet content, post videos, give assignments, post grades and give feedback, and access other information and websites that are highly recommended by other teachers. Teachers can also create sub-groups within a group in order to differentiate learning. Students can submit assignments and homework, engage in discussions, do collaborative work, and receive any feedback they may receive from teachers. There is also an Edmodo app, making it accessible through smartphones.
http://www.artsonia.com/
Artsonia is an online children's art museum. Students can upload their artwork, share and view the artwork of other students in a global community. Their artwork is saved on the site forever so that they can view and share it years later. Parents and other "fan club members" can also register to view specific students artwork, and will receive an e-mail every time that student posts a new piece of artwork. Additionally, fan club members can even order merchandise such as mugs and t-shirts featuring the student's artwork. Members of the Artsonia community can also leave comments and words of encouragement on each art piece.
https://cacoo.com/lang/en/?ref=logo
Cacoo is a drawing tool that allows users to create a variety of diagrams. Diagrams can be worked on collaboratively in real time, making it possible for multiple users to edit the same diagram simultaneously. Collaborators are also able to chat on the site as they work, making communication a snap. Diagrams can be embedded in Blogs and Wikis, and can even be edited by strangers if made public and posted on Twitter or Facebook.
