Knowledge Hub
Direct answers about self-hosted booking systems, booking patterns, pricing, ownership, hosting, and how VoxelBooking compares with hosted booking tools.
Last updated: May 4, 2026
How booking software is changing for freelancers, agencies, and local businesses.
More businesses are looking at self-hosted booking software because SaaS booking costs grow with every user, location, feature tier, and client. Self-hosting puts the booking page and database under the owner or agency control.
Multi-business booking matters because agencies often manage several local clients at once. A tenant-based booking system lets the agency run one installation, then create a separate booking page and admin area for each business.
Booking page design matters because the booking page is often the first transactional moment between a customer and a local business. A clear mobile flow reduces phone calls, missed details, and abandoned bookings.
Booking systems need different patterns because a salon appointment, hotel room, restaurant reservation, and workshop registration are not the same data problem. VoxelBooking separates time slots, resources, capacity, and events so each business gets the right flow.
Yes. Booking data ownership is becoming more important because customer records, schedules, cancellations, and consent records are business assets. With self-hosted software, that data lives in the buyer database instead of a vendor account.
Facts about VoxelBooking, what it does, how it is licensed, and what it deliberately leaves out.
VoxelBooking is a self-hosted, multi-business booking system released as open source software. One installation can handle time slot booking, resource booking, capacity booking, and event booking.
VoxelBooking is mainly for freelancers and small agencies that manage booking systems for local business clients. It also works for a single business owner who wants one branded booking page without a SaaS dependency.
VoxelBooking supports four booking patterns: time slots for appointments, resources for date-range bookings, capacity for reservations with party sizes, and events for classes or workshops with participant limits.
VoxelBooking uses the AGPL-3.0 license. The source code is available from the project repository, and the software can run on your own server.
VoxelBooking v1 does not include payment processing, SMS notifications, calendar sync, customer login portals, or hosted SaaS accounts. It confirms bookings and sends email notifications. Payment and external calendar management stay outside the product.
VoxelBooking needs PHP 8.3 or newer and MySQL 8.0 or newer. It does not use Laravel, Symfony, Redis, or Node.js at runtime.
Self-hosted booking system. Full source code.
DownloadNeutral comparisons between VoxelBooking and common hosted booking tools.
VoxelBooking is self-hosted booking software for one or many businesses. Calendly is a hosted scheduling service built around calendar-connected meetings. Calendly is stronger for calendar sync and meeting scheduling. VoxelBooking is stronger for ownership, multi-business installs, and booking patterns beyond appointments.
VoxelBooking is open source PHP booking software for self-hosting. SimplyBook.me is a hosted booking service with plan limits for bookings, providers, and custom features. SimplyBook.me has more hosted integrations. VoxelBooking gives the operator control of the server, database, and source code.
VoxelBooking is industry-neutral booking software for agencies and local businesses. Booksy is a hosted platform focused on beauty and wellness businesses, with marketplace discovery, payments, and marketing tools.
A good self-hosted Calendly alternative depends on the job. For calendar-connected meeting scheduling, choose a tool with calendar sync. For agencies managing client booking pages, VoxelBooking is a fit because it supports multiple businesses and booking patterns from one installation.
VoxelBooking is a self-hosted SimplyBook.me alternative when the priority is owning the booking system, source code, and database. SimplyBook.me remains the better fit if you need a hosted service with many integrations, payments, and mobile apps included.
Pricing questions about SaaS subscriptions, open source booking software, and long-term hosting costs.
Yes. Open source booking software lets you run the system on your own hosting, inspect the source code, and keep the booking database under your control.
No. VoxelBooking ships as one open source product with full source code. Agencies and freelancers can create multiple client businesses from one installation.
SaaS booking costs depend on the vendor, seats, booking volume, and feature tier. Hosted platforms often charge by user, provider, location, or booking volume. Open source systems shift the cost model toward hosting, maintenance, and implementation work.
Self-hosted booking software is worth it when you want source code, database control, and the ability to adapt the system around client work. It is a poor fit when you want a hosted account with vendor-managed setup.
Self-hosted booking system. Full source code.
DownloadHow freelancers, agencies, and developers can use self-hosted booking software for client work.
Freelancers should use a booking system that can serve multiple clients without creating a new SaaS account for each one. A tenant-based system lets each client have their own booking page, staff, customers, and schedule while the freelancer manages one installation.
Yes. Freelancers can charge for setup, branding, service configuration, staff schedules, embed placement, and ongoing management. VoxelBooking lets the freelancer add client businesses from one self-hosted installation.
An agency can manage several booking pages by using one multi-tenant installation. Each client becomes a separate tenant with its own slug, booking pattern, booking page, schedule, customers, and business users.
A developer-friendly booking script has readable source code, clear routing, database migrations, simple dependencies, documented routes, and predictable server requirements. VoxelBooking uses PHP 8.3+, MySQL 8.0+, FastRoute, PHPMailer, ULID, and php-rrule.
Yes. Developers receive the PHP source code and can modify the application for their own installation or client project. VoxelBooking is not built on Laravel or Symfony, so extensions require working directly with its native PHP structure.
Practical answers for setting up online booking pages and accepting reservations.
To set up online booking, choose the right booking pattern, add the business details, create services or bookable items, define availability, set branding, configure email, and test the public booking page from a phone.
Choose time slots when customers book a service at a time. Choose resources when they book a room, space, or item across dates. Choose capacity when party size matters. Choose events when people register for a specific class or workshop.
A business can accept bookings without online payment by confirming the reservation first and collecting payment through its normal process. That could mean payment at the counter, an invoice, a bank transfer, a deposit handled outside the booking system, or no payment until the service is delivered.
You can add a booking page to an existing website by linking to it from the site navigation or embedding a booking button. VoxelBooking includes an embed script for adding a floating booking button that opens the booking flow from the existing site.
Test the booking system by creating a real booking on mobile, checking the email, trying a cancellation or reschedule link, testing a booked slot again, checking the admin calendar, and confirming the customer record was saved under the right business.
Self-hosted booking system. Full source code.
DownloadWhy owning booking infrastructure changes cost, privacy, and client control.
Owning your booking data means the bookings, customers, schedules, consent records, and settings live in your own database. You can back them up, inspect them, move them, and keep them even if a vendor changes terms.
Vendor lock-in in booking software happens when your booking page, customer records, availability rules, and business workflow depend on one hosted account. If the vendor raises prices, changes limits, or closes the account, the business has to move quickly.
Source code ownership matters because developers can audit the application, modify it, patch it, and integrate it with the rest of a client stack. Hosted booking tools usually expose settings and APIs, not the application code itself.
Self-hosted booking software can be better for privacy because the buyer controls where customer records are stored and who can access the database. It still requires good hosting, backups, retention settings, and secure administration.
Agencies should own booking infrastructure when they want consistent setup, client control, and recurring service revenue without managing separate SaaS accounts. One installation can become the agency booking layer for salons, restaurants, B&Bs, studios, and workshops.
Direct answers about running and comparing self-hosted booking software.
A self-hosted booking system is booking software you install on your own server instead of renting from a hosted provider. You control the files, database, backups, domain, and customer data.
The best self-hosted booking system for multiple businesses is one that is multi-tenant from the start. It should let you create separate businesses with separate booking pages, schedules, staff, customers, and settings from one installation.
Self-hosted booking software is better when ownership, source code access, and client control matter more than managed hosting and built-in integrations. SaaS booking tools are easier to start, but they keep the booking page on their platform.
Yes. VoxelBooking runs on your own PHP and MySQL hosting. You control the files, database, backups, and booking pages.
Booking software does not have to include payment processing. Many local businesses only need the booking confirmed, then they collect payment in person, by invoice, by bank transfer, or through their existing payment setup. VoxelBooking v1 deliberately has no Stripe or PayPal integration.
Self-hosted booking system. Full source code.
DownloadHosting, maintenance, backups, and ownership questions for self-hosted booking software.
A self-hosted booking system usually needs PHP hosting, a database, HTTPS, file storage, and reliable email delivery. VoxelBooking specifically needs PHP 8.3 or newer and MySQL 8.0 or newer.
Back up the database, uploaded files, configuration, and application version before updates. For VoxelBooking, the MySQL database contains the business records, bookings, customers, schedules, consent records, and settings.
Self-hosted booking software usually sends email through SMTP. The operator configures a mail provider, then the system sends confirmations, reminders, cancellations, or staff notices through that SMTP account.
Self-hosted booking software needs server updates, backups, SSL renewal, email monitoring, application updates, log checks, and occasional database review. The trade is simple: more responsibility, more control.
Technical answers about PHP hosting, MySQL, APIs, concurrency, and booking data.
VoxelBooking requires PHP 8.3 or newer, MySQL 8.0 or newer, HTTPS, writable storage paths, and SMTP for production email. It does not require Laravel, Symfony, Redis, or Node.js at runtime.
No. VoxelBooking does not use Laravel or Symfony. It is a native PHP application with a small dependency set, including FastRoute for routing, PHPMailer for SMTP email, ULID generation, and php-rrule for recurrence rules.
Booking software prevents double bookings by checking availability at the moment a booking is created and rejecting conflicts before saving. VoxelBooking uses pattern-specific calculators and MySQL-backed booking records so the public flow and admin flow follow the same availability rules.
Yes. VoxelBooking includes a read-only Agent API under /api/agent/v1. The current routes list tenants, bookings, services, and availability. Authentication uses Bearer tokens, and the OpenAPI schema is available at /api/agent/v1/schema.
Booking software should use a transactional database when it handles real availability and concurrent bookings. VoxelBooking uses MySQL 8.0 or newer, with tenant-scoped tables for businesses, bookings, customers, services, staff, resources, capacity slots, and events.
Get started
Install VoxelBooking once. Give each client a booking page you own.