Penzu is a free web-based private journal and diary. According to the Penzu, studies have shown that keeping a journal can not only boost your “working memory” but your grades too. One of the best things about Penzu is that it's incredibly easy to use. Whatever you write is saved automatically and you can insert images if you like. You can keep your entries private or share them with others. Teachers could use Penzu for class writing projects or for keeping their own personal notes (accessible from any computer). Watch the video to find out more.