mathverse parent
No the closest alternative is https://grsecurity.net/
Factually wrong from that very site
> grsecurity® is the only drop-in Linux kernel replacement offering high-performance, state-of-the-art exploit prevention against both known and unknown threats.
While secureblue is a full desktop distro (not just a kernel) that integrates key grapheneos hardening tools like their hardened malloc and forks of their hardened chromium and works with flatpak as a base for hardened application deployment.
grsecurity does literally none of that.
Yes grsecurity offers actual hardening instead of touting snakeoil.
You are literally saying that hardening the kernel is the same as having the desktop environment hardened and a basis for app isolation. And to add a cherry on top of that both secureblue and kicksecure use almost all the same hardening additions to the linux kernel as grsecurity.
You do not understand what you are talking about because if you did you'd be embarrassed for how braindead your response is.