Evernote

 

Evernote is probably one of the best applications invented! I have being using it for the last 3 years and it is installed on all my PCs, blackberry, Mac, and ipads and I use it for everything from clipping web pages, to do lists, important work information,  household projects, travel reservations, warranty, saved emails, etc etc etc. Although I do not store much data in terms of MB, I upgraded to the premium version ($5 per month or $45 per year) so that I could secure my ipad notes and get offline files on the ipad which is extremely useful for working on the plane. The premium version allows up to 1 GB to be uploaded per month vs the 65MB for the free version plus it gives note history, faster image recognition, indexing of PDFs and individual notes can go up to as much as 50mb.

Additional information