Bazaar App Store is described as 'Bazaar is a new app store for GNOME with a focus on discovering and installing applications and add-ons from Flatpak remotes, particularly Flathub. It emphasizes supporting the developers who make the Linux desktop possible' and is a Package Manager in the os & utilities category. There are more than 25 alternatives to Bazaar App Store for a variety of platforms, including Linux, Mac, Windows, Web-based and Arch Linux apps. The best Bazaar App Store alternative is Homebrew, which is both free and Open Source. Other great apps like Bazaar App Store are Flatpak, Flathub, Synaptic and GNOME Software.
Gnome Software is the closest appstore to Bazaar in terms of design - it's default in almost every Gnome DE and it's great for traditionnal Linux package systems. HOWEVER it's still behind in Flathub support and the VERY FREQUENT loading screens traumatise me.