Please vote for Open Event in the Google Impact Challenge: https://impactchallenge.withgoogle.com/deutschland/charity/lxde
The idea of Open Event is to give organizers and participants a tool to plan events and distribute information to attendees. We are working on an organizers server and mobile apps (https://github.com/fossasia/open-event).
Your vote for Open Event will support the development of the project. Thank you!