Comment by smine

Making a webapp (an inside-messenger mini-app) to create, hold and manage local amateur tennis tournaments.

So far I've built stuff like automatically created and advanced tournament brackets with group stage, match schedules, participation queue and achievements. Not that hard, really, but helped me get into the backend side of web-development.

We currently organize 2-4 events each weekend for 300 people of different skill levels.

So far it's exclusive for our small community, but I'm thinking of offering it to similar groups of people in other cities.