The Zach Inc. Task Manager is a free and open-source (and simplistic) task manager for Windows, designed as an alternative to the Windows TaskMGR (file name: taskmgr.exe).
To download and install the latest version, visit https://download-task-manager.zacharyrude.repl.co/, or select the latest version in the "Releases" page in the repository.
To download and install older versions, visit the Releases page, as the official website for downloading the program only allows you to download and install the latest version.
Once you download the .msi file, open it to run the installer and install Task Manager on your computer. Follow the instructions in the installer so you can successfully install it.