Comparison
VoxelBooking
vs Calendly.
Open source software vs per-seat SaaS.
Multi-business booking pages vs calendar-first scheduling.
Model
Open source vs hosted scheduling.
VoxelBooking
Install it on your server. Keep the source code, booking data, tenants, and branded pages under your control.
AGPL-3.0 licensed. No product tiers.
Calendly
Use a hosted scheduling account. Calendly manages infrastructure, calendar sync, payment integrations, and plan limits.
Strong for meeting workflows and sales teams.
Features
Feature by feature.
| Feature | VoxelBooking | Calendly |
|---|---|---|
| Software model | Open source, self-hosted | Hosted SaaS |
| Booking patterns | Time slots, resources, capacity, events | Meeting and appointment scheduling |
| Multi-business | VoxelBooking supports multiple client businesses | Team and organization accounts |
| Branded booking pages | ✓ Custom colors, logo, cover image | Limited branding on paid plans |
| Self-hosted | Your server, your data | Calendly hosted |
| Calendar integrations | Not available in v1 | Google, Outlook, iCloud |
| Payment collection | Not available in v1 | Stripe, PayPal |
| Staff management | Individual availability schedules | Team scheduling |
| Customer CRM | Built-in with booking history | Contact and scheduling activity |
| GDPR tools | Consent, deletion queue, anonymization | Hosted compliance controls |
| Restaurant reservations | Capacity pattern with party sizes | Not a restaurant reservation system |
| Hotel or room booking | Resource pattern with date ranges | Not a room booking system |
| Event registration | Events with participant limits | Group events and meeting types |
| Embed widget | One-line JavaScript embed | Embed and popup |
| Data ownership | Your server, your database | Calendly servers |
| Feature tiers | No product tiers | Plan-based feature access |
Their strengths
Where Calendly wins.
Calendar sync
Two-way sync with Google Calendar, Outlook, and iCloud. Calendly reads your availability in real time. VoxelBooking manages availability through its own schedule system.
Payment collection
Collect payments at booking via Stripe or PayPal. VoxelBooking handles scheduling and confirmations but does not process payments.
Zero setup
Sign up, connect your calendar, share a link. No server, no installation. Calendly handles hosting, SSL, and uptime. VoxelBooking requires a server with PHP 8.3+ and MySQL 8.0+.
Our strengths
Where VoxelBooking wins.
Four booking patterns, not one
Calendly does appointment scheduling. VoxelBooking does appointments, room bookings, restaurant reservations, and event registration. One system covers salons, hotels, restaurants, and yoga studios.
Multi-business for agencies
VoxelBooking supports multiple client businesses from one installation. Create a business for each client with their own booking page, schedule, customers, and branding. Calendly organizes users around hosted accounts and teams.
Open source ownership
Add staff, businesses, and customers from one installation. The source code and database remain in your infrastructure, so you can shape the system around client work.
Your data, your server
Customer data, booking records, and business settings stay on your infrastructure. No booking SaaS vendor sits between you and your booking data. Full GDPR compliance with consent collection and auto-anonymization.
Summary
The verdict.
Choose Calendly if you need calendar sync with Google and Outlook, payment collection at booking, and a zero-setup SaaS experience. Calendly is excellent for consultants and sales teams who live in their calendars.
Choose VoxelBooking if you manage multiple businesses, need more than appointment scheduling, want branded booking pages per client, and prefer open source software you can self-host. VoxelBooking is for freelancers and agencies who serve small businesses.
Also compare: SaaS vs self-hosted booking software · VoxelBooking vs Cal.com
Get started
Own your booking system.
Full source code. Four booking patterns. No per-seat fees.