Best / Scheduling & booking
Best open-source Scheduling & booking
The best open-source scheduling split in the c17.io catalog is Cal.com for a public booking page, Easy!Appointments for a self-hosted appointment book, Rallly for group meeting polls, and LibreBooking for resource reservations. Mailflare already ships a booking page on the office stack. The published poll combo is /stacks/rallly-scheduling; Calendly-shaped booking also lives on /stacks/meeting-pipeline.
Open the stackStart on Railway
Ranked picks
1
Cal.comMIT scheduling infrastructure — the Calendly-shaped booker already named on the office and meeting stacks.
When to pick it: A public booking page on a calendar you own.
49,079 stars in the catalog
2
Easy!AppointmentsGPL self-hosted appointment scheduler with Google Calendar sync.
When to pick it: A clinic or shop book, not a group poll.
4,440 stars in the catalog
3
RalllyAGPL meeting polls — the c17 Doodle stack.
When to pick it: When can everyone meet, before anyone publishes availability.
5,308 stars in the catalog
4
LibreBookingGPL resource scheduler for rooms and shared assets.
When to pick it: Reserve a room or a kit, not a 1:1 Calendly link.
828 stars in the catalog
How they compare
| Tool | License | Self-host | Best for |
|---|---|---|---|
| Cal.com | MIT License | Medium | A public booking page on a calendar you own. |
| Easy!Appointments | GNU General Public License v3.0 | Easy | A clinic or shop book, not a group poll. |
| Rallly | GNU Affero General Public License v3.0 | Easy | When can everyone meet, before anyone publishes availability. |
| LibreBooking | GNU General Public License v3.0 | Medium | Reserve a room or a kit, not a 1:1 Calendly link. |
Related pages
- Rallly / Cal.com stack
- Cal.com → LiveKit / Jitsi → meetily → Resend stack
- Mailflare office stack
- Replace Doodle
- Replace Calendly
- Replace Zoom
- Replace Google Meet
- Replace Webex
- Replace Otter
- Replace Fathom
- Replace Google Workspace
- Replace Microsoft 365
- Replace Google Calendar
- All best open-source pages
- All replace pages
- All stacks
- Tools catalog
FAQ
- Rallly or Cal.com?
- Rallly if the meeting has no host calendar yet — a poll. Cal.com if someone publishes availability. That is the stack FAQ.
- Where does Calendly go?
- A public booking page is Cal.com (or Mailflare's booking page on /stacks/mailflare-office). The video room after the booking is /best/video-conferencing.
- Are these free?
- OSI licenses as listed. Rallly asks for an honor-based key on multi-user self-host; the repo stays AGPL. You pay hosting. Template users never pay c17.
- How do I deploy it?
- Open /stacks/rallly-scheduling for polls, or /stacks/meeting-pipeline if you also need the room. Railway CTAs stay on those pages.
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