Onyx by Titanium - This website provides operating system utilities for macOS
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Cocktail - General purpose system modify/repair utility
Lacona - Fast, simple, powerful keyboard-driven commands for Mac
Dockey - Make your macOS Dock faster
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.