pretix

pretix is an open-source ticketing platform for conferences, festivals and exhibitions, developed by pretix GmbH (formerly rami.io GmbH) in Heidelberg, Germany since 2014. Organisers can sell tickets through customisable shops with seating plans, exhibitor management, on-site check-in apps and tooling for hybrid and virtual events, and the platform is privacy-first and GDPR-compliant. The hosted SaaS uses a per-ticket fee of 2.5% with a EUR 15/ticket cap and a free quota of 500 tickets per year, plus self-hosted on-premise deployments on AGPL/Apache-licensed code.