Cal.com vs Schej
| Tagline | Scheduling infrastructure for everyone, the open-source Calendly alternative | When2meet-style group availability finder you can self-host |
| Category | Scheduling & Booking | Scheduling & Booking |
| Replaces | Calendly, Acuity Scheduling | Calendly, Acuity Scheduling |
| GitHub stars | 46k | 700 |
| Language | TypeScript | Vue |
| License | AGPL-3.0 | MIT |
| Self-host difficulty | 3/5 Moderate | 2/5 Easy |
| Deploy options | One-Click Docker Docker Compose Manual | Docker Compose Manual |
| Managed hosting | ||
| Last updated | 5 days ago | 8 months ago |
| View repo | View repo |
Where each falls short
The honest trade-offs — what you give up with each, versus the proprietary tools they replace.
Cal.com
- Some enterprise features (e.g. SAML SSO, advanced admin/insights, certain platform features) are gated behind a commercial/EE license even when self-hosting.
- Self-hosting requires PostgreSQL plus configuring numerous environment variables and OAuth credentials for calendar integrations.
- The core code is AGPL-3.0, which imposes copyleft obligations on modified network deployments.
- Upgrades between major versions occasionally require manual database migration work.
Schej
- No calendar integration — availability is marked manually
- No booking confirmation or email reminders
- Limited to group poll-style scheduling, not one-on-one booking pages
Bottom line
Choose Schej if you want the lower-effort setup; choose Cal.com for the larger community and ecosystem. Cal.com has seen more recent development. Open each guide below for deploy steps and the full feature gap.
Cal.com
Scheduling infrastructure for everyone, the open-source Calendly alternative