Agenda vs Zcal
| Tagline | Node.js job scheduling library with persistent MongoDB-backed queue | Beautiful open-source scheduling page and availability management tool |
| Category | Scheduling & Booking | Scheduling & Booking |
| Replaces | Calendly | Calendly, Acuity Scheduling |
| GitHub stars | 9.7k | 1.2k |
| Language | TypeScript | TypeScript |
| License | MIT | MIT |
| Self-host difficulty | 3/5 Moderate | 2/5 Simple |
| Deploy options | Manual Docker | Docker Compose Manual |
| Managed hosting | ||
| Last updated | 2 months ago | 6 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.
Agenda
- Library only — no UI for managing or viewing scheduled jobs without additional tooling
- Requires MongoDB; not suitable for simple SQLite/Postgres-only stacks
- No native support for distributed locking at high scale
Zcal
- Smaller calendar and integration ecosystem than Cal.com or Calendly.
- The self-hosted path has a smaller community and less operational documentation than Cal.com.
- Advanced enterprise administration and routing controls are less extensive than larger scheduling platforms.
Bottom line
Choose Zcal if you want the lower-effort setup; choose Agenda for the larger community and ecosystem. Agenda has seen more recent development. Open each guide below for deploy steps and the full feature gap.