This page is a list of resources to help you build your own forum! Priority goes to obscure older/abandonware and open source software :^)

• Fido net BBS
  • TBA
• Acmlmboard II
  • TBA
• PhpBB
  • An extremely old BBforum that is widely used and has a lot of community plugins. Highly customizable, and customizing it is recommended because it looks a tad bit basic and unappealing otherwise.
• MyBB
  • A free forum software similar to phpBB.
• simplemachines
  • An open-source free community forum software with lots of features!
• cerca
  • minimalist, open-source forum software designed to be low-maintenance and low-cost

• Mastodon
  • An open decentralized social media running on the activitypub protocol.
• Misskey
  • Another open decentralized social media running on the activitypub protocol.

• Coppermine (Alternative link)
  • A web gallery that looks a lot like classic deviantart or even sheezy art.

• Xenforo [$60 per month]
  • The vast majority of forums on the web use Xenforo. It has many plugins and is highly customizable.