Can I open-source Rise Calendar?
KINDA · partial or early alternativesKinda. Cal.com cover the core of Rise Calendar, but they're early or partial — expect gaps like multi-calendar conflict handling and race-free booking under load.
Rise Calendar: 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
xcalendar-provider edge cases and timezone correctness
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
Rise Calendar pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| solo | $0/user | $0/user | 1 personal user; unlimited tasks and projects; advanced scheduling. |
| teams | $11.55/user | $9.24/user | Team calendar, tasks, projects, and scheduling; no numeric task/project cap published. |
free tier1 personal user; unlimited tasks and projects; advanced scheduling.
billingmonthly + annual (-20%)
hidden costsVAT may apply depending on location.
verified 2026-08-14 · source ↗
Can I open-source Rise Calendar?
Kinda. Cal.com covers the core of Rise Calendar, but there are real gaps: multi-calendar conflict handling, race-free booking under load. Read the honest list above before committing.
How much does Rise Calendar cost?
Rise Calendar'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 Do not publish a number until rechecked..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 Rise Calendar?
Honestly: multi-calendar conflict handling; race-free booking under load; team routing and round robin; reliable reminders and timezone edge cases; calendar-provider edge cases and timezone correctness. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Rise Calendar?
Yes: Cal.com (Open scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations)