Good to know: In-base deamons generally privelege separated, chrooted (for example, sshd chroots to /var/emtpy by default).
Shells: OpenBSD's default shell is /bin/sh, the public domain Bourne shell. The other shells in base are csh and ksh. Other favorites are available as packages (pkg_add $favorite_shell).
Remember: DON'T change root's default shell. Your whines afterwards will be soundly ridiculed.
Editors: OpenBSD base has ex for the diehards, vi and mg (Emacs clone, the "just an editor" kind), and of course others available via packages.