1 Alfred
If you want to supercharge your Mac-Based productivity, stop what you’re doing and download the award-winning Alfred app. If you aren’t convinced, just read some of the reviews on the Mac App Store or across the web.
Alfred is, basically, a Mac app launcher. Using customizable keyboard shortcuts, you can easily find and launch applications, files and sites on your computer or on the web. But it also sports a staggering range of productivity functions (many of which are user-created). The best way to see what Alfred can do is to just download it and try it out. While there’s a paid-purchase “Powerpack” available, the basic app is free to use.