BBJ is a trivial collection of python scripts and database queries that miraculously shit out a fully functional, text-driven community bulletin board. Requires Python 3.4 and up for the server and the official TUI client (clients/urwid/).
It's all driven by an API sitting on top of CherryPy. Currently it does not serve HTML but this is planned for the (distant?) future.
The two official client implementations are a stand alone TUI client for the unix terminal, and GNU Emacs. The API is simple and others are welcome to join the party at some point.