I will be working on an Open Source event management platform built on top of Frappe Framework.
It has following features:
Dynamic tickets and Add-on Types
The booking form: Once you have defined the proper ticket types, add-ons, and publish your event, the booking form will dynamically use it for booking.
Payments App Integration: This app depends on Frappe's Payments app for online payments.
Ticket Management: Allow users to purchase, update and transfer tickets.
etc..
Currently every event is made via Frappe's Desk (backend). The issue is you need to host your instance to manage the events and those events are global i.e. for the complete system not per person . I will be enhancing this app and adding features to make it multi-tenant. So, on a single hosted instance multiple people can come and host their events.