Evernote

Price: Free
Downloads: 3 million
For: iPhone, Android, and BlackBerry
Available at: Evernote

Note to self: Download Evernote, a tool designed to help you remember everything you don't want to forget. You can type a text note, take a picture, or create an audio reminder for all the brilliant ideas you're bound to have. Everything you capture is automatically processed, indexed, and made searchable. Scroll through a chronological list of your notes or group them by the location at which they were created. You can pin them on a map or scroll through thumbnails. You can also clip a Web page you like or take a screen shot of something online that interests you. It's a comprehensive application for organizing the random moments that will be part of your college experience.