# Open-Source Alternatives to Meetup > :information_source: Pull-requests are welcome! | Name | Source | Maturity¹ | Backend Language | License | | ----------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------- | -------------- | ---------------- | ----------------------------- | | [Agorakit](https://agorakit.org/) | [GitHub](https://github.com/philippejadin/agorakit) | mature | PHP | GPLv3 | | [attendize](https://www.attendize.com/) | [GitHub](https://github.com/Attendize/Attendize) | mature | PHP | Attribution Assurance License | | Chapter by freeCodeCamp | [GitHub](https://github.com/freeCodeCamp/chapter) | new | JavaScript | BSD 3-Clause | | [eventoL](http://eventol.github.io/eventoL/) | [GitHub](https://github.com/eventoL/eventoL) | mature | Python | GPLv3 | | [GetTogether](https://gettogether.community/) | [GitHub](https://github.com/GetTogetherComm/GetTogether) | mature | Python | BSD 2-Clause | | [Gospeak](https://www.gospeak.fr/) | [GitHub](https://github.com/loicknuchel/gospeak) | mature | Scala | Apache 2.0 | | [joind.in](https://joind.in/) | [GitHub](https://github.com/joindin/joindin-web2) | mature | PHP | BSD 3-Clause | | Thinkmill Meetup Alternative | [GitHub](https://github.com/Thinkmill/meetup-alternative) | in development | JavaScript | unlicensed | | [Mobilizon](https://joinmobilizon.org/en/) | [framagit.org](https://framagit.org/framasoft/mobilizon/) | in development | Elixir | AGPL | | [on_ruby](https://www.onruby.eu/) | [GitHub](https://github.com/phoet/on_ruby) | mature | Ruby | (extended) Beer-ware | | Open Event | GitHub: [Frontend](https://github.com/fossasia/open-event-frontend), [Backend](https://github.com/fossasia/open-event-server) | mature | Python | Apache 2.0 & GPLv3 | | [Open Tech Calendar](https://opentechcalendar.co.uk/) | [GitLab](https://gitlab.com/opentechcalendar) | mature | PHP | BSD 3-Clause | | [OpenKi](https://openki.net/) | [Gitlab](https://gitlab.com/Openki/Openki/) | mature | MeteorJS | AGPLv3 | | [OSEM](https://osem.io/) | [GitHub](https://github.com/openSUSE/osem) | mature | Ruby | MIT | 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 ## See also