But I prefer openbsd or man7 pages, sure.
Debian: https://manpages.debian.org/
Ubuntu: https://manpages.ubuntu.com/
FreeBSD: https://man.freebsd.org/
OpenBSD: https://man.openbsd.org/
https://man.archlinux.org/
Useful if you need to see the manpage of a very recent version of a package.
This page there: https://man7.org/linux/man-pages/man3/hsearch.3.html
export LESS='--mouse --wheel-lines=3'
https://www.mankier.com/1/qemu
https://man.freebsd.org/cgi/man.cgi?query=hcreate&manpath=Fr...