Alf.io is a free, open-source ticket reservation system built for event organisers who care about privacy, security, and fair pricing. Developed in Switzerland, it covers the full lifecycle of an event — from a public ticket shop, to event management and reporting — with no reliance on big ticketing platforms and no hidden fees for attendees.

Key Features

• Public ticket shop — attendees reserve or buy tickets with a clean, mobile-first interface
• Flexible payments — Stripe, Mollie, PayPal, bank transfer, or on-site payment at the door
• PCI-compliant — card data handled by the payment gateway, never stored on your server
• Multi-language — Italian, English, Spanish, German, Dutch, French, Turkish, Romanian, Portuguese and more
• Secure by default — strict Content Security Policy and HTTPS
• Alf.io Scan companion apps — iOS/Android apps for attendee check-in and badge scanning
• Offline check-in stations — Raspberry Pi touchscreen stations for large events that work offline with duplicate-ticket protection
• Measurable — optional Google Analytics with privacy-friendly anonymous stats

Why Use Alf.io?

It keeps control of your event and your attendees’ data away from large ticketing platforms, while avoiding the per-ticket fees they typically charge. Being free software under GPLv3, it runs on your own infrastructure and can be extended however you need.

Use Cases

• Conferences and tech meetups selling tickets
• Workshops and training sessions with attendee registration
• Trade shows and exhibitions with badge scanning and lead capture
• Small events that want on-site or pay-at-door check-in

Platform

Web (self-hosted, cloud-ready: Heroku, OpenShift, Kubernetes, etc.) + iOS/Android scan apps

Licence

GPLv3 (web app); Apache-2.0 (scan app) — free and open source

Website

alf.io