When comparing SliTaz vs KDE Neon, the Slant community recommends SliTaz for most people. In the question“What are the best Linux distributions for desktops?” SliTaz is ranked 27th while KDE Neon is ranked 36th. The most important reason people chose SliTaz is:
The core liveCD is only 35 megabytes. The boot-from-internet option fits on a floppy.
Specs
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Pros
Pro One of the smallest distributions with desktop GUI
The core liveCD is only 35 megabytes. The boot-from-internet option fits on a floppy.
Pro Very fast
Pro Can add desktop effects
SliTaz has a feature called "Desktop Effects" which can add shadow or fade effects to windows.
Pro Very customizable
SliTaz is very customizable. You can programatically edit and change anything you want on how the OS looks or behaves.
Pro Works out of the box
Since it's built on the strong Ubuntu base, KDE Neon works seamlessly with a huge variety of hardware.
Pro Configurability
KDE Neon uses KDE as its desktop environment, which is highly configurable, but also has great defaults.
Pro The best looking Linux OS
It really is a great and stunning looking OS.
Pro Works well on low-end computers
Cons
Con Install instructions are in French
When first booting SliTaz from a USB or from a Live CD, the installation instructions are in French.
Con Not much variety as to available applications
SliTaz does not have as many applications in its repositories as the bigger distros such as Ubuntu.
Con Steep learning curve for beginners
It's a really sparse, bare-bones system, no automatic driver install for example. It can be quite hard for someone not used to Linux.