Alf.io vs Cal.diy
Both Alf.io and Cal.diy are self-hosted alternatives to Calendly. Both are filed under Booking and Scheduling.
Side by side
| Field | Alf.io | Cal.diy |
|---|---|---|
| Description | Ticket reservation system. | Online appointment scheduling system. |
| GitHub stars | 1,627 | 49,627 |
| License | GPL-3.0 | MIT |
| Platforms | Java | Nodejs |
| Latest release | 2.0-M5-2609, 18 September 2026 | v6.2.0, 1 March 2026 |
| Repository activity | 1 November 2026 | 1 November 2026 |
| Health | Active | Active |
| Categories | Booking and Scheduling | Booking and Scheduling |
| Website | https://alf.io/ | https://cal.diy/ |
| Source code | https://github.com/alfio-event/alf.io | https://github.com/calcom/cal.diy |
Where the records differ
Computed from the two records above: a line appears only where the dataset states a figure, a date or a set relation, and no line recommends one application over the other.
- Cal.diy has more GitHub stars in the dataset, 49,627 against 1,627.
- Both repositories last recorded activity on 1 November 2026.
- Alf.io has the newer release on record: 2.0-M5-2609, 18 September 2026, against v6.2.0, 1 March 2026.
- Licenses differ: Alf.io is listed under GPL-3.0; Cal.diy under MIT.
- Platforms differ: Alf.io lists Java; Cal.diy lists Nodejs.
- Both are filed under the same categories: Booking and Scheduling.