PopClip by Pilotmoon - PopClip appears when you select text with your mouse on your Mac. Instantly copy & paste, and access actions like search, spelling, dictionary and over 100 more.

macOS Sierra a quick look.

Alfred Part 1  and Alfred Part 2  - Alfred is a productivity application for Mac OS X, which boosts your efficiency with hotkeys, keywords and text expansion.

Slack  tool for communication and collaboration