I've installed openSUSE Leap Linux to my PC of 2008 (left one),
and booted my PC of 2014 with Fedora Linux from DVD without installation (right one).

Both outward appearance, operation, and basic applications are same, but the original applications by each developer (distribution) are different.

And the command line operation (Terminal) is different a little although Linux's feature is common.

Some of Linux distribution below as reference:

OpenSUSE Linux:
https://software.opensuse.org/

Debian Linux:
https://www.debian.org/

Kubuntu Linux:
https://kubuntu.org/getkubuntu/

Fedora Linux:
https://getfedora.org/

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