Tech Tool Store - Tech tool store is an IT professional application which contains more than 600 free technician tools packed in a simple, fully featured interface.
Onyx by Titanium - This website provides operating system utilities for macOS
Tron Script - Tron is a glorified collection of batch files that automate the process of cleaning up Windows systems.
MacPilot - Unlock over 1200 features in Mac OS X and optimize your system!
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
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.