Google Apps Flubaroo, a free, quick, and easy tool that can cut your grading time in half.  Works with Google Apps.

Make great videos. Easily.

Everything you need to turn ordinary photos and video clips into rich videos. the classroom to life with interactive mobile presentations
that teachers create and customize themselves. thought provoking questions which motivate participation through game-based learning and rewards in a social setting. Remind 101
 Dropbox Prezi  wordle (1)Wordle is a toy for generating “word clouds” from text that you provide.
 Moodle Evernote Socrative LogoSocrative is a smart student response system that empowers teachers to engage their classrooms through a series of educational exercises and games via smartphones, laptops, and tablets. an entire webpage or any portion, annotate it with rectangles, circles, arrows, lines and text, one-click upload to share. Twitter Osmo Game System