Apps similar to Linux From Scratch include FreeBSD, which is free and open source. Other options are Gentoo, NomadBSD, MINIX 3 and Tiny Core Linux. You can choose from more than 10 Operating Systems like Linux From Scratch for Linux, self-hosting, Mac and Windows.
Founded in 2014 by Oliver Pinter and Shawn Webb, HardenedBSD is a security-enhanced fork of FreeBSD. The HardenedBSD Project is implementing many exploit mitigation and security technologies on top of FreeBSD.
Astral is a 64 bit operating system with its own kernel written in C for the x86-64 architecture.
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Minimal Linux Live is a tiny Linux distribution which is designed to be built from scratch using a collection of automated shell scripts.
