x11/rxvt-unicode 9.31p3 OpenBSD

rxvt-unicode is a customizable terminal emulator forked from rxvt. Features of rxvt-unicode include international language support through Unicode, transparency, the ability to display multiple font types and support for Perl extensions.

The standard package mostly follows upstream's default build options, with only 256-colour support added.

Other flavours are available:

everything - built with "--enable-everything" to enable all
  features, including some heavier-weight ones

small - built with only limited options (to reduce size
  and dependencies)