The self-hosted Calendly alternative
Slotly — Appointment & Booking System (PHP + MySQL, Self-Hosted) — Self-hosted appointment booking engineered so it can't double-book.. Own it once, run it on your own server, and stop paying Calendly every month.
Stop renting Calendly
Calendly — rented
Standard $10/seat/mo, billed yearly
[1]billed every month, forever · your data in their cloud
Slotly — Appointment & Booking System (PHP + MySQL, Self-Hosted) — yours
$34.00
one-time · self-hosted · your data, your server
2 months of Calendly equals this one-time price.
Available soon — get notified
Assumption: Per-seat pricing - calculator assumes 3 staff seats x $10 = $30/mo (Standard, annual billing).
Why owning beats renting Calendly
- One payment. No monthly, per-seat, or per-location fees — the license is perpetual.
- Your data stays on your server. It never lives in Calendly's cloud.
- No plan ceilings. Records and users are limited by your hosting, not a pricing tier.
- It keeps working if the vendor doesn't. Self-hosted software can't be sunset or price-hiked out from under you.
Fair trade-offs: you host it, back it up, and apply updates yourself — see the
product page for honest limitations, and the
full Slotly — Appointment & Booking System (PHP + MySQL, Self-Hosted) vs Calendly comparison.
Sources
- Calendly — price checked 2026-07-05 —
source
“$10 /seat/mo”
Competitor prices change — always confirm on the linked page. We only print figures we could verify on the date shown.