They called their openssl fork libressl - I assume because of exactly that naming conflict - but most of their "exports" follow the convention; OpenBSD, OpenSMTPD, OpenNTPD, OpenSSH. Possibly others that I don't know off the top of my head.

Sorry, OpenBSD already wrote libressl and libtls

Well "libressl" doesn't sound like an open-source rewrite of the proprietary "openssl" :-).

I don't really get the point about libtls, though.

But I get it, OpenBSD has been using Open* as a prefix for many projects, I didn't know it :-).