Here are a list of completely free applications for MacOS. I discovered them in 2022 and wanted to share them with everyone.
HARDWARE INFORMATION CATEGORY
Stats
Stats is an application that allows you to monitor your macOS system.
- Battery level
- Bluetooth devices
- CPU utilization
- Disk utilization
- Fan/s control
- GPU utilization
- Memory usage
- Network usage
- Sensors information (Temperature/Voltage/Power)
You can install it easily via Brew :
brew install --cask stats

WINDOW MANAGEMENT CATEGORY
Alt-Tab
AltTab brings the power of Windows’s “alt-tab” window switcher to macOS.
Features
- Switch focus to any window
- Minimize, close, fullscreen any window
- Hide, quit any app
- Customize AltTab appearance (e.g. show app badges, Space numbers, increase icon, thumbnail, title size, etc)
- Custom trigger shortcuts with almost any key
- Blacklist apps you don’t want to list or trigger AltTab from
- Dark Mode
- Drag-and-drop things on top of window thumbnails
- Right-to-left languages and UI
- Accessibility: VoiceOver, sticky keys, reduced transparency, etc
Brew install :
brew install --cask alt-tab

SOFTWARE MANAGEMENT CATEGORY
AppCleaner
Project homepage and download link
AppCleaner is a small application which allows you to thoroughly uninstall unwanted apps.
Installing an application distributes many files throughout your System using space of your Hard Drive unnecessarily.
AppCleaner finds all these small files and safely deletes them.
Simply drop an application onto the AppCleaner window. It will find for the related files and you can delete them by clicking the delete button.

LATEST
Latest is a free and open source app for macOS that checks if all your apps are up to date. Get a quick overview of which apps changed and what changed and update them right away. Latest currently supports apps downloaded from the Mac App Store and apps that use Sparkle for updates, which covers most of the apps on the market.

Screen Recording add-on utilities
KeyCastr
KeyCastr enables you to share your keystrokes when creating screencasts, presenting, or collaborating with others. You can choose to display all keystrokes or command keys only, and there is also an option to include mouse clicks.
It is also possible to develop your own visualizer on top of KeyCastr — pull requests are welcome!
Brew install :
brew install --cask keycastr

Monitor / Screen tools
MonitorControl
Project Home page and download
Controls your external display brightness and volume and shows native OSD. Use menulet sliders or the keyboard, including native Apple keys!
