It’s a new desktop by the Pop!_OS team, System76. They previously used Gnome extensions but to make a snoother, more performant experience, they have been working on an entirely new desktop environment + toolkit, all in Rust. They call it Cosmic.

The new Cosmic Store is super fast and smooth, perhaps the fastest package manager GUI on Linux desktop.

Check out this speed comparison against GNOME Software: (Cosmic starts around 1:10) https://files.catbox.moe/mzz004.mp4

If you’re on Pop!_OS 22.04 you can already install it with sudo apt install cosmic-store.

There’s a few other COSMIC apps available but the store is the most usable one right now IMO. The text editor is fun too though. If you’re on another Debian based OS, you can probably add the system76 repo and then install it.

Of course, but I don’t never need to be told nothing like that from nobody when I’m commenting in a pedantic language thread! /s

Nobody is a negation (not anybody). So they do have to explain themselves to somebody