When comparing Slax vs Korora, the Slant community recommends Slax for most people. In the question“What are the best Linux distributions for misanthropes?” Slax is ranked 62nd while Korora is ranked 94th. The most important reason people chose Slax is:
Changes you make in the configuration persist if you run from USB.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Persistent changes
Changes you make in the configuration persist if you run from USB.
Pro Pretty fast to boot up
It was considerably fast to turn on when booting from cd.

Pro Modules
Standard tar archives plus some simple shell scripting produces modules that you can load dynamically into the OS for added apps and functionality.
Pro Modern desktop

Pro Small footprint
About 200mb, but with a full KDE4 environment and loads of useful apps.

Pro Easy to install
Korora has its own installer, which beginners can handle too.

Pro More user-friendly than Fedora
Korora has some useful third-party software pre-installed and is configured for immediate use.
Cons
Con Overly complicated HDD/SSD installation
While it has a nice layout Slax's lack of an installer tool like Tinycore's just can't be justified. It seems strange that it comes built in with programs that some users may not want, yet it doesn't have an easy way to install it. Due to its heavier use of RAM, built in software, and lack of an installer its hard to choose it over TC.
Con Works slowly on old computers
Con Infrequent releases
Since Slax is maintained by only one person, releases are not that frequent. So it may take a while to get bug fixes or new features once you start using it.
Con No longer developed
Developers are having a "break" which started on May 2 2018. The latest release is version 26.
