"Free online service for teachers to create their own customized portfolio webpage." Includes a personal URL, ability to upload files, links, photos, etc.
Web app lets students use web-connected mobile devices to indicate whether or not they understand a topic, then provides teachers a real-time graph of student responses.
Site allows users to create lists of pros and cons for an issue, then solicit viewer input on weighing the 2 sides against each other. Great for problem solving, debates, etc.
Free software lets students design games in Flash or iOS modes. Games can be tested in iDevices or in Stencyl Lite software (Mac only for testing software; all platforms for design). Subscription allows submission to iTunes store. Built on Scratch.