Open-Source Alternatives to Meetup

ℹ️ Pull-requests are welcome!

Name Source Maturity¹ Backend Language License
Agorakit GitHub mature PHP GPLv3
attendize GitHub mature PHP Attribution Assurance License
Calendar.social gitea inactive Python AGPLv3
Chapter by freeCodeCamp GitHub inactive JavaScript BSD 3-Clause
Communecter GitHub inactive PHP Apache 2.0
Epicyon GitLab new Python AGPLv3
eventoL GitHub mature Python GPLv3
Friendica GitHub mature PHP AGPLv3
Gancio Framagit new JavaScript AGPLv3
Gath GitHub new JavaScript GPLv3
GetTogether GitHub inactive Python BSD 2-Clause
Gospeak GitHub inactive Scala Apache 2.0
Hubzilla Framagit mature PHP MIT
Human Connection GitHub inactive JavaScript MIT
joind.in GitHub mature PHP BSD 3-Clause
Meetdown GitHub inactive Structr Apache 2.0
Meetup Alternative by Thinkmill GitHub inactive JavaScript unlicensed
Mobilizon framagit.org in development Elixir AGPL
on_ruby GitHub mature Ruby (extended) Beer-ware
Open Event GitHub: Frontend, Backend mature Python Apache 2.0 & GPLv3
Open Tech Calendar GitLab mature PHP BSD 3-Clause
Openki Gitlab mature MeteorJS AGPLv3
OSEM GitHub mature Ruby MIT
Pretix Gitlab mature Python Apache 2.0
Upcoming GitHub mature JavaScript Apache 2.0

¹: mature = the project is actively used by groups, new = this is a new project with no usable software, in development = usable software exists, but is not ready for general use, inactive = was under development, but more than 1 year without commits

See also

https://www.phacks.dev/articles/meetup-com-alternatives