When comparing Parabola GNU/Linux-libre vs CRUX, the Slant community recommends CRUX for most people. In the question“What are the best rolling release Linux distributions?” CRUX is ranked 17th while Parabola GNU/Linux-libre is ranked 20th. The most important reason people chose CRUX is:
It uses the BSD ports system as package manager.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Protects your freedom, certified free by the FSF
Pro Option to use OpenRC or Systemd
Parabola has an OpenRC edition and a Systemd edition, so users can choose which init system they want.
Pro All the benefits of Arch Linux, only 100% certified free software
Pro Very Secure
Pro Has its own repos
Parabola has its own repos (which are almost as large as Arch Linux) and the IceCat browser is included.
Pro Can be migrated from Arch Linux without a CD/USB
Pro Based on Arch Linux
Pro Ports
It uses the BSD ports system as package manager.
Pro Very BSD/UNIX-like
Pro Learning
Nice if you want to learn some stuff about Linux.
Pro Very knowledgeable and helpful user comunity via IRC
Cons
Con Won't work out-of-the-box on the most PC's
Almost all PCs need non-free drivers but Parabola has none to offer.
Con Same cons that apply to Arch Linux
Con Not compatible with AUR
Unlike other Arch-based distros, this free distro doesn't support AUR.
Con Small repositories
Since Parabola is a completely free distro, there is no non-free software available and the community repositories are small compared to the AUR.
Con Incompetent developers
They only care about removing "non-free" software, rather than making a properly working OS.
Con Serves no purpose
It's just Arch without non-free software and is basically a niche OS with few users.
Con Not really free
People have to pay hundreds to maintain this distro.
Con Very small user community
Con KISS
You have to do everything by yourself, there are no helpers!