Calendly vs Rallly
Calendly and Rallly are both booking and scheduling software. Calendly is a commercial product from Calendly. Rallly is open source under AGPL-3.0, with 5.3k GitHub stars.
Which to pick
- Pick Calendly when
- Sales, recruiting or consulting staff spend time on back-and-forth emails to book meetings.
- Pick Rallly when
- You often coordinate meetings or events with people outside your organisation and want an ad-free Doodle replacement.
Side by side
Meeting scheduling links that check your calendar availability, with round-robin team scheduling, payments, reminders and CRM integration.
A meeting poll tool, like Doodle, where people vote on proposed dates and times without creating accounts.
Team features and integrations need paid seats.
Some features are reserved for the paid hosted plan, and the app is AGPL licensed.
Production-ready (both)
Cloud service, mobile app and browser extension
Self-hosted server and cloud service
Not published
TypeScript, Next.js, Prisma and PostgreSQL
Closed source, sold by Calendly
Open source, AGPL-3.0 (network copyleft)
Closed source: you use it under the maker's terms and cannot change or resell the code.
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.
1k Wikipedia readers a month on phones
5.3k GitHub stars
Not known
Established: started 11 years ago, latest release untagged-6490d7892bf741592dba.
Other comparisons
More booking and appointment scheduling tools
Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.