Best of 2026
Best open-source Scheduling & Calendars apps
The 3 highest-scoring open-source Scheduling & Calendars apps on AppFinder, each with the facts behind its position.
Positions come from our organic score, led by people: community upvotes, visitor ratings and feedback, then how complete the listing is and how recently it was updated. Verification, Pro plans, team ratings and advertising are not inputs, and nothing paid can add an upvote. How ranking works
At a glance
- Ranked here
- 3
- Apps in Scheduling & Calendars
- 12
- With a free plan
- 3 of 3
Top 3 open-source Scheduling & Calendars apps
Ranked by organic score: upvotes and ratings from people. Payment never changes this order.How ranking works
Position 1
Schedule Anything
Why it’s here
- Includes Public API, Self-hosting, Activity tracking and 12 more
- Integrates with GitHub, Google Calendar, OpenAI and 1 more
- Open source
Position 2
Powerful ticketing. None of the cost
Why it’s here
- Includes Public API, Self-hosting, Activity tracking and 7 more
- Integrates with Stripe
- Open source
Position 3
Open-source scheduling
Why it’s here
- Includes Public API, Self-hosting, Appointment scheduling and 3 more
- Integrates with Google Calendar, HubSpot, Outlook and 4 more
- Open source