NX Software Center is described as 'You can now easily explore and get your favorite applications easily (in some cases directly from their original authors!). No matter which GNU/Linux distribution you are using' and is an app. There are three alternatives to NX Software Center for Linux, BSD, Oracle Solaris, Mac and Windows. The best NX Software Center alternative is Zero Install, which is both free and Open Source. Other great apps like NX Software Center are Snapcraft and AM.
Zero Install is a decentralised cross-distribution software installation system. Other features include full support for shared libraries, sharing between users, and integration with native platform package managers.
Snaps are software packages that are simple to create and install. They auto-update and are safe to run. And because they bundle their dependencies, they work on all major Linux systems without modification.
AUR-inspired database, and package manager to install, update (for real) and manage ALL AppImages and other portable formats for GNU/Linux, system-wide or locally, with the ease of APT and the power of PacMan.
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