Open Source Alternatives to vBulletin

Discourse

Modern forum and community platform

★ 46,183 Updated: Feb 2026 Status: Slowing

MyBB

Community forum software built by volunteers

★ 1,194 Updated: Jan 2026 Status: Slowing

phpBB

The bulletin board software that helped define online forums, still going strong

Status: Unknown

V

Vanilla Forums

A lightweight, highly extensible community forum software.

Status: Unknown