Evernote by Gabriel Santiago

Evernote is an online notebook which enables you to type notes, attach files, make handwritten note and create voice memos. You can sort them out into different folders which can be edited from any device. There is also online synchronization so you can see all of your notes on all of your devices.

product demo: http://www.youtube.com/watch?v=lTIKJDdsoKI
screenshots:

Evernote is a great web app for us students because students like to have their notes on the go and with evernote forgetting to bring your notebook would not be a problem because even if you do not have your laptops with you in school you can still access your notes from your phone because it has an online sync feature which syncs all the notes you have created into your devices. I guess this app can help in students performance in school because reviewing notes will be a lot easier you do not even need a bag anymore to have tons of notes with you. And not only that you can also attach files with your notes and this is really helpful because nowadays students use their camera phones in taking pictures of the notes on the board and with this they can attach the photos of the notes with their evernote notes.