Here's the Asto Guitar Generator. You can plug in the notes your strings are tuned to and look for chords. You could also just use DADGAD chords and reverse the middle two strings.

Question: Why do people call DADGAD open D tuning when it has no F# and it does have a G?

I'm not talking about just JB's reference up there - I've seen plenty of others refer to it that way, and one thread about "Open D" was assumed by quite a few folks to be a discussion of DADGAD.