Stencyl allows virtually anyone the access to create video games without having to know coding. Users can collaborate with designers and other users through the Stencyl social network online as well as share projects and designs. Users can either keep their work and publish it on their own blog or web site, or can share the wealth for future users and publish it on Stencyl.

This is a great video to show what Stencyl is all about.

This is an example of a flashcard web site that can be good for both students and teachers. Students and teachers can individually, or in groups, create flash cards to help them learn certain subjects. Also, there are a number of archived flash card sets for public use as well. Pretty basic as far as design on the cards for a basic memberships, but you can upgrade.