App Outlet is a Universal application store. It easily allows you to search and download applications that runs on most Linux distributions. It currently supports AppImages, Flatpaks and Snaps packages.
Or here to the Github releases.
If your distro doesn't support the available packages, you can download and compile the source code by following the instructions here.
See what the content producers and influencers are talking about app outlet on AO on Media category on discussions area.