Evernote
The ever-accelerating pace of modern life makes remembering everything we want a real challenge, especially when those things range from the real to the virtual. Evernote is here to solve that problem, letting you capture nearly anything you want — including text and voice memos, web pages, photos (with text recognition!), documents, and more — and then automagically processing and indexing it all, adding it to a personal database that can be searched and accessed from nearly anywhere, including from your iPhone, Android phone, or BlackBerry, as well as any Mac, PC, or other web-enabled device. If you find yourself exhausting the upload limit on your free account, you can step up to a $5/month premium membership for 500MB/month of uploads, ad-free usage, SSL security, the ability to search within PDFs, priority image recognition, and more.