Homebrew is a package manager that installs the stuff you need that Apple or Linux didn’t.

OnyX is a multifunction utility that you can use to verify the structure of the system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the Finder, Dock, Safari, and some Apple applications, to delete caches, to remove certain problematic folders and files, to rebuild various databases and indexes, and more.

OpenCore Legacy Patcher enables macOS Big Sur and newer versions to be installed on Macs as old as 2007, even if they are no longer supported by Apple.

Parallels Desktop is the fastest, easiest, and most powerful application for running Windows on Mac — without rebooting. Includes 30+ utilities to simplify everyday tasks on Mac and Windows.

macOS gives you a choice to download whatever version is currently available of the macOS you need.

Maintenance is an operating system maintenance and cleaning utility for macOS that you can use to perform miscellaneous computer maintenance tasks: run periodic scripts; rebuild the databases; delete applications, fonts, system caches; and more.

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.

Awesome Mac is the ultimate way to discover the best apps for your macOS.

Full Deck Solitaire is a beautiful card game with an easy-to-use user interface. You can download from the Mac App Store or play online.

TinkerTool is an application that gives you access to additional preference settings Apple has built into macOS. This allows activating hidden features in the operating system and some of the applications delivered with the system.