Can I open-source SimplyBook.me?
KINDA · partial or early alternativesKinda. Cal.com cover the core of SimplyBook.me, but they're early or partial — expect gaps like multi-calendar conflict handling and race-free booking under load.
SimplyBook.me: People pay because a booking tool must never double-book them, leak private events, or send the wrong time to a client.
xmulti-calendar conflict handling
xrace-free booking under load
xteam routing and round robin
xreliable reminders and timezone edge cases
These projects already replace it, free.
CCal.comOpen scheduling infrastructure with booking pages, round-robin, routing forms, and app integrationsopen source↗What each one is, in full: Cal.com
no votes, no pay-to-list · just what's real
SimplyBook.me pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| free | $0 | $0 | 50 bookings; 1 custom feature; 1 provider. |
| basic | $13.90 | $11.90 | 100 bookings; 3 custom features; 5 providers. |
| standard | $29.90 | $24.90 | 500 bookings; 8 custom features; 15 providers. |
| premium | $59.90 | $49.90 | 2,000 bookings; unlimited custom features; 30 providers. |
| enterprise | custom | — | Custom bookings and providers; unlimited custom features. |
free tier50 bookings; 1 custom feature; 1 provider.
billingmonthly + annual (-17%); Enterprise custom
hidden costsBooking, provider, and custom-feature caps can force a plan upgrade; SMS and payment-processor charges are separate where used.
verified 2026-08-14 · source ↗
Can I open-source SimplyBook.me?
Kinda. Cal.com covers the core of SimplyBook.me, but there are real gaps: multi-calendar conflict handling, race-free booking under load. Read the honest list above before committing.
How much does SimplyBook.me cost?
SimplyBook.me's pricing is usage-based or varies by plan · The official pricing URL is recorded, but a stable current amount was not safely recoverable in this pass. Do not publish a number until rechecked..
What do I lose by replacing SimplyBook.me?
Honestly: multi-calendar conflict handling; race-free booking under load; team routing and round robin; reliable reminders and timezone edge cases. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to SimplyBook.me?
Yes: Cal.com (Open scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations)