Message board platform question

Greetings!

I love your message boards. Can you please let me know what vendor you use, or if you built your own? They are easy to use and good for navigation.

We are thinking of launching our own message boards, sometime next year, on a muchsmaller scale than what you currently offer.
I would love any recommendations you can offer around certain platforms.

Thanks, Susan Tenby, CompuMentor.org