When comparing Adélie Linux vs FydeOS, the Slant community recommends Adélie Linux for most people. In the question“What are the best Linux distros that don't use systemd?” Adélie Linux is ranked 41st while FydeOS is ranked 51st. The most important reason people chose Adélie Linux is:
Built on Alpine's APKBUILD system, which is an accessible and simple packaging system. If you're familiar with Arch's ABS or Gentoo's ebuilds, APKBUILDs are a breeze.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Simple packaging system
Built on Alpine's APKBUILD system, which is an accessible and simple packaging system. If you're familiar with Arch's ABS or Gentoo's ebuilds, APKBUILDs are a breeze.
Pro Is pure Python 3
There is a hard and fast rule against Python 2 software in the main repositories, with efforts focused on adapting software to use Python 3 where possible.
Pro Small and performant
A standard installation takes under 200 MB. Only the bare necessities are included.
Pro Inviting and receptive development team
The people building the distro are knowledgeable and helpful when issues arise. Merge requests are actively suggested and reviewed, and the developers thank users for taking the time to learn the distro.
Pro On par with Chrome OS
Features are almost on par with Chrome OS
Cons
Con Not (yet) ready for Linux newbies
As of November 2018, there isn't an installer yet. If you're familiar with installing Arch or Gentoo (via chroot, fdisk, et al) then it's no big deal. An installer framework (called Horizon) is in the works.
Con Is pure Python 3
Python 2 support is not supported by the distro, so many older upstreams who haven't adapted to Python 3 yet will need their software patched to work (this is both a pro and a con).
Con Somewhat limited package set for servers
As of November 2018, it's still missing some server software. It's primarily a desktop-oriented distribution, but accepts server packages and progress has already been made on that front, including lighttpd, apache, and php-fpm. Contributors are already bringing more server software to the distro, including certbot, cgit, and Nextcloud.
Con Chinese Software
You never know... ...they also replaced the Google cloud with their own(but you can also revert this back (https://forum.xda-developers.com/hardware-hacking/chromebooks/fydeos-google-sync-using-fydeos-account-t3872442).
Con No dualboot
It does not support dualboot on the same harddisk as the OS.