@ -1585,7 +1585,7 @@ _Related: [Booking and Scheduling](#booking-and-scheduling)_
- [hitobito](https://hitobito.com/en) - A web application to manage complex group hierarchies with members, events and a lot more. ([Demo](https://demo.hitobito.com/en/users/sign_in), [Source Code](https://github.com/hitobito/hitobito)) `AGPL-3.0``Ruby`
- [JD Esurvey](https://www.jdsoft.com/jd-esurvey.html) - Open source enterprise survey web application. ([Source Code](https://github.com/JD-Software/JDeSurvey)) `AGPL-3.0``Java`
- [LimeSurvey](https://www.limesurvey.org) - Feature-rich Open Source web based polling software. Supports extensive survey logic. ([Demo](https://demo.limesurvey.org), [Source Code](https://github.com/LimeSurvey/LimeSurvey)) `GPL-2.0``PHP`
- [Meetable](https://events.indieweb.org) - A minimal events aggregator. ([Source Code](https://github.com/aaronpk/Meetable)) `MIT``PHP`
- [Mobilizon](https://mobilizon.org) - A federated tool that helps you find, create and organise events and groups. ([Demo](https://demo.mobilizon.org/), [Source Code](https://framagit.org/framasoft/mobilizon/)) `GPL-3.0``Elixir`
- [Open Event Server](https://github.com/fossasia/open-event-server) - Enables organizers to manage events from concerts to conferences and meet-ups. `GPL-3.0``Python`
- [PHPBack](https://www.phpback.org) - The open source feedback system. ([Demo](https://www.phpback.org/demo/), [Source Code](https://github.com/ivandiazwm/phpback)) `GPL-3.0``PHP`