My criteria for selecting productivity tools: Best-in-class - Of course, it has to offer superior utility and functionality over other products in the same class Cloud-backed - It is 2015. If your product doesn't include a way for me to sync information between devices and be backed-up to the cloud, you're dead to me Secure - 2-factor authentication, encryption, and additional security features are required Quality Apps - Access to my data via full-featured applications across all of my devices. If I can't get to it and manipulate it with my iPhone, it doesn't exist A few examples of tools that fit the bill for me are: Skype Evernote 1Password Dropbox
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