Self-hosted alternatives to Microsoft Bookings
Want appointment booking in Microsoft 365 without handing your data to Microsoft Bookings? These 10 self-hosted apps run on your own server. Cheapest estimated hosting starts at about $5/month.
About Microsoft Bookings: Microsoft 365 appointment booking app.
| App | Health | Stars | License | Docker | RAM (est.) | From |
|---|---|---|---|---|---|---|
| Cal.diy | Active | 49.7k | MIT | ✓ | 1 GB | $5/mo |
| QloApps | Active | 14.5k | OSL-3.0 | – | 1 GB | $5/mo |
| Rallly | Active | 5.3k | AGPL-3.0 | ✓ | 1 GB | $5/mo |
| Easy!Appointments | Active | 4.5k | GPL-3.0 | ✓ | 1 GB | $5/mo |
| Hi.Events | Active | 4.1k | AGPL-3.0 | ✓ | 2 GB | $10/mo |
| Alf.io | Active | 1.6k | GPL-3.0 | – | 2 GB | $10/mo |
| LibreBooking | Active | 844 | GPL-3.0 | ✓ | 1 GB | $5/mo |
| OpenSlides | Active | 661 | MIT | ✓ | 1 GB | $5/mo |
| Seatsurfing | Active | 316 | GPL-3.0 | ✓ | 1 GB | $5/mo |
| Chobble Tickets | Active | 37 | AGPL-3.0 | ✓ | 2 GB | $10/mo |
The options in detail
1. Cal.diy
Online appointment scheduling system.
Active Last commit 2026-11-03. 10+ releases in the past year. Latest release v6.2.0 (2026-03-01). Needs roughly 1 GB RAM incl. postgres. How to run it →
2. QloApps
Customizable and intuitive web-based hotel reservation system and a booking engine.
Active Last commit 2026-11-03. Latest release v1.7.0 (2025-07-04). Needs roughly 1 GB RAM. How to run it →
3. Rallly
Create polls to vote on dates and times (alternative to Doodle).
Active Last commit 2026-11-04. Latest release untagged-6490d7892bf741592dba (2026-11-01). Needs roughly 1 GB RAM. How to run it →
4. Easy!Appointments
Allows your customers to book appointments with you via the web.
Active Last commit 2026-10-19. 7 releases in the past year. Latest release 1.6.1 (2026-10-19). Needs roughly 1 GB RAM. How to run it →
5. Hi.Events
Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets.
Active Last commit 2026-11-03. Latest release v1.11.3-beta (2026-10-24). Needs roughly 2 GB RAM. How to run it →
6. Alf.io
Ticket reservation system.
Active Last commit 2026-11-01. 2 releases in the past year. Latest release 2.0-M5-2609 (2026-09-18). Needs roughly 2 GB RAM. How to run it →
7. LibreBooking
Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations.
Active Last commit 2026-11-04. Latest release v7.2.0 (2026-11-03). Needs roughly 1 GB RAM. How to run it →
8. OpenSlides
Presentation and assembly system for managing and projecting agenda, motions and elections of an assembly.
Active Last commit 2026-11-03. Latest release 4.3.7 (2026-11-03). Needs roughly 1 GB RAM. How to run it →
9. Seatsurfing
Webbased app to book seats, desks and rooms for offices.
Active Last commit 2026-11-03. Latest release v1.140.1 (2026-11-03). Needs roughly 1 GB RAM. How to run it →
10. Chobble Tickets
Event ticketing with QR check-in and encrypted attendee records. The complete product is AGPL-3.0 with no open core and no branding requirement, and it runs as an edge script without an always-on server (alternative to Eventbrite).
Active Last commit 2026-11-05. 10+ releases in the past year. Latest release v2026-10-03-091652 (2026-10-03). Needs roughly 2 GB RAM. How to run it →
Why self-host instead of Microsoft Bookings?
- Own your data — it lives on a server you control, with backups you decide on.
- Predictable cost — a small VPS often replaces per-seat pricing for a whole team or family.
- No lock-in — open-source licenses let you keep running the software even if a vendor disappears.
The trade-off: you are responsible for updates, backups and security. Pick an app marked Active (a commit in the last 90 days) and with Docker support for the easiest ride.
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Microsoft Bookings is a trademark of its owner; this site is not affiliated with it. Listings come from the community-maintained awesome-selfhosted list.