@ -17,8 +17,8 @@
| 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 |
| [Pretix ](https://pretix.eu/ ) | [Gitlab ](https://gitlab.com/pretix/pretix/ ) | mature | Python | Apache 2.0 |
| [OSEM ](https://osem.io/ ) | [GitHub ](https://github.com/openSUSE/osem ) | mature | Ruby | MIT |
| [Pretix ](https://pretix.eu/ ) | [Gitlab ](https://gitlab.com/pretix/pretix/ ) | mature | Python | 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