Cel.ly is a website used to communicate through text messages. You can create groups, called cells, send texts out as polls, and receive the results at the end of the poll. Very neat tool.
"DebateGraph is an award-winning, web-platform for visualizing and sharing networks of thought - and opening reasoning and action to collaborative learning and iterative improvement."
"AnswerGarden is a new minimalistic feedback tool. Use it as a tool for online brainstorming or embed it on your website or blog as a poll or guestbook."
Bunkr is an online presentation tool which not only enables you to create your presentations (a la powerpoint) in your web browser but also to collect and store content (image, video, quote, text) from the internet which you can use later in your slides.
"PrimaryAccess is a suite of free online tools that allows students and teachers to use primary source documents to complete meaningful and compelling learning activities with digital movies, storyboards, rebus stories and other online tools."