Evernote (Android, iOS, Windows, Blackberry)

Want to take notes while attending a seminar? This will let you type, make bullet-points, take and attach snaps/video, colour code (for nit-pickers) and send to anyone and everyone in an instant. Make multiple notes, and then segregate them into notebooks. Want to save them online for back-up? This allows you cloud-storage by signing up. And if you want more, go pro and unlock offline storage and more. Scanning business cards? Check. Text-toSpeech? Double check.

Price: ` 310 per month for premium