You can download Hydrogen from http://www.hydrogen-music.org. On the Downloads page you can find several binaries (installers) for MacOS and Windows.

Due to the variety of distributions we do not provide packages for Linux. If you do not find Hydrogen in the repository of your distribution, please ask the people behind it to include Hydrogen.

	Warning
	From MacOS Big Sur onwards you may require some extra steps to run Hydrogen on you computer. This page of the Hydrogen Wiki will guide you through this process step by step.