via Wikipedia infobox
PunBB (PunBulletinBoard) is a lightweight PHP-based internet discussion board system released under the GNU General Public License. The project's primary goal is to be a faster, smaller, and less graphic alternative to discussion boards such as phpBB, Invision Power Board, or vBulletin.
PunBB was originally designed to output standard XHTML, with speed and simplicity in mind. Features such as private messaging, polls, file sharing, and attachments were not originally implemented. However, they have since been released as third-party modifications. PunBB has supported third-party extensions since version 1.3.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).