unlord (LCA 2019)
Shiz & PoroCYon (Revision 2019)
-march=haswell should be
the latter usually, but not always, generates smaller code (source)
- Ferris' "Squishy" packer isn't exactly 'general-purpose'
as compared to kkrunchy, but the approach is more general at least.
- runit and s6 are perfectly fine at supervising daemons.