Chances are, if you talk to five different people at work, you will find five tools or techniques they use to be productive that you hadn’t even heard of.
Rather than do your own polling, you can also check out this article: Most Popular Apps Employees Use At Work – Business Insider.
Remember, these are just for work, and yes, Facebook still shows up there. And this is just the cloud / distributed services. (Also, I am wondering Evernote didn’t show up there.)
I would be surprised if you read it and didn’t adopt at least one of the items on the list by the end of your work day. Good luck.