https://wccftech.com/gog-galaxy-2-0-is-now-in-open-beta-and-available-to-everyone/

GOG Galaxy 2.0, the ambitious rework of the PC gaming app, is now officially in Open Beta and therefore available to everyone for download.

The main goal of GOG Galaxy 2.0 is to allow users to keep a single launcher instead of having to juggle multiple launchers, from Steam to Origin, from UPlay to Battle.net and so on.