Xee3 - A better Mac OS X's Preview.app
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
MacFly Pro - Smart assistant for better Mac performance
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Power Mode Switcher for macOS - macOS Monterey introduced a new feature for some Macs called Low Power Mode so you can save energy while keeping your Mac cool and quiet.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.