Mandoc, the default manpage formatter on OpenBSD, FreeBSD, NetBSD, macOS, and some Linuxes (as well as web frontends like manpages.debian.org and man.archlinux.

Mandoc, the default manpage formatter on OpenBSD, FreeBSD, NetBSD, macOS, and some Linuxes (as well as web frontends like manpages.debian.org and man.archlinux.org), can convert manpages to Markdown, or to HTML directly: https://mandoc.bsd.lv/man/mandoc.1.html#Markdown_Output https://mandoc.bsd.lv/man/mandoc.1.html#Markdown_Output