pretix if you sell tickets (Eventbrite). Mobilizon or Gancio if you organize a group/agenda (Meetup). Indico if the job is a CERN-shaped conference.

The LICENSE is AGPLv3 plus additional terms that restrict SaaS to third parties. Self-hosting your own events is how the project is meant to be used.

Rallly is a meeting poll (/replace/doodle). This page is events and tickets.

Stacks / Meetings

Medium

pretix / Mobilizon / Gancio

Events you host. pretix is AGPLv3 with additional terms for tickets; Mobilizon and Gancio are AGPL-3.0 community agendas — Eventbrite and Meetup without the listing fee.

The problem

Eventbrite meters tickets and listings. Meetup meters groups. You wanted registration you run. pretix is AGPLv3 with additional terms that restrict offering pretix as SaaS to third parties — running it for your own events is the intended path. Mobilizon is AGPL-3.0 (Framagit kaihuri/mobilizon) for federated events and groups. Gancio is AGPL-3.0 (Framagit les/gancio) for a local shared agenda. Indico is MIT (CERN) if the job is a conference timetable, not a ticket shop. This is not Eventbrite Boost ads or Meetup's every paid group SKU. Scheduling polls stay on /replace/doodle.

Replaces

Eventbrite / Meetup

Replace Eventbrite Replace Meetup See all best open-source event tools

Estimated SaaS saved

$1,200

per year, small team, before lock-in

Start on Railway

Rallly if this is a meeting poll, not tickets

Sponsor this stack Tip jar

Placeholder: pretix + Postgres (tickets), or Mobilizon/Gancio for a community agenda. Bind HTTP to 0.0.0.0:$PORT. No one-click template in this repo yet — Start on Railway. Polls stay on /stacks/rallly-scheduling.

The stack

pretix
AGPLv3 ticket shop with additional terms (self-host your own events)
Catalog entry →
Mobilizon
AGPL-3.0 federated events and groups (Meetup-shaped)
Catalog entry →
Gancio
AGPL-3.0 shared agenda for local communities
Catalog entry →
Indico
MIT CERN event manager if the job is a conference, not a ticket shop
Catalog entry →

Cost table

You stop paying	Typical / year	Self-host instead
Eventbrite / Meetup (small organizer)	$1,200	pretix, Mobilizon, or Gancio

Agent setup prompt

Replace Eventbrite with pretix (tickets) or Meetup with Mobilizon/Gancio (community events).

- pretix: official docs, Postgres, one event, one test ticket. Read the additional terms (no offering pretix as SaaS to third parties).
- Mobilizon/Gancio if the job is a public agenda, not a paid ticket shop. Indico if the job is a conference timetable. Write AGENT_PROMPT.md.

Also as markdown: /stacks/pretix-events.md

FAQ

pretix or Mobilizon?: pretix if you sell tickets (Eventbrite). Mobilizon or Gancio if you organize a group/agenda (Meetup). Indico if the job is a CERN-shaped conference.
Is pretix OSI AGPL?: The LICENSE is AGPLv3 plus additional terms that restrict SaaS to third parties. Self-hosting your own events is how the project is meant to be used.
Why not Rallly?: Rallly is a meeting poll (/replace/doodle). This page is events and tickets.