Best Open-Source Acuity Scheduling Alternatives (2026)
2 self-hostable, open-source projects that replace Acuity Scheduling — without monthly subscriptions per calendar. Each is scored for how hard it is to self-host, with one-click deploy options where they exist.
Acuity bills a monthly subscription per calendar and locks more advanced booking features into higher tiers, which adds up for multi-provider businesses, and it ties you into the Squarespace ecosystem. Self-hosting removes the recurring per-calendar fee and keeps client records, appointment history, and intake data under your own control.
Our picks at a glance
Both are 3/5, but Cal.com adds a One-Click deploy option that lowers setup friction over a manual install.
Far broader feature set, integrations, and API, plus a much larger ecosystem to extend booking workflows.
Provides an official managed cloud (managed:yes); Easy!Appointments is self-host only.
Compare all 2 alternatives
Tap a column header to sort| Project | Deploy | Managed | License | ||||
|---|---|---|---|---|---|---|---|
 Cal.com TypeScript | 36k ★ | 3/5 Moderate | One-Click Docker +2 | AGPL-3.0 | 14 days ago | Repo | |
| 4.2k ★ | 3/5 Moderate | Docker Docker Compose +1 | GPL-3.0 | 19 days ago | Repo |
What to look for: For appointment-style booking you need provider and service management, working-hours and buffer rules, and reliable calendar sync and reminders. Decide whether you want a developer-extensible scheduling platform (Cal.com) or a focused service-business booking app with built-in provider/service models (Easy!Appointments).
The alternatives, reviewed
- #1
Cal.comSelf-host: ModerateScheduling infrastructure for everyone, the open-source Calendly alternative
36k TypeScript AGPL-3.0 14 days agoHow it compares to Acuity Scheduling
- Some enterprise features (e.g. SAML SSO, advanced admin/insights, certain platform features) are gated behind a commercial/EE license even when self-hosting.
- Self-hosting requires PostgreSQL plus configuring numerous environment variables and OAuth credentials for calendar integrations.
- The core code is AGPL-3.0, which imposes copyleft obligations on modified network deployments.
- Upgrades between major versions occasionally require manual database migration work.
- #2
Easy!AppointmentsSelf-host: ModerateSelf-hosted appointment scheduler for service businesses with provider and service management
4.2k PHP GPL-3.0 19 days agoHow it compares to Acuity Scheduling
- No built-in payment collection at booking time, unlike Acuity/Calendly paid tiers.
- Calendar sync is limited to Google Calendar; no native Outlook/Office 365 or CalDAV support.
- The UI and admin experience feel dated compared to commercial products.
- Lacks advanced features like automated reminder workflows, packages/memberships, and intake form logic found in Acuity.
The verdict
Cal.com is the strongest overall Acuity replacement thanks to its feature depth, managed-cloud option, and active community. If you run a service business and want a lighter, purpose-built tool with native provider and service management, Easy!Appointments is the focused alternative.
Acuity Scheduling alternatives — frequently asked questions
What is the best open-source Acuity Scheduling alternative?
Cal.com for breadth and Easy!Appointments for service-business booking. Cal.com (AGPL-3.0, ~36,000 stars) offers the most features and a managed cloud; Easy!Appointments (GPL-3.0) is built around providers and services.
Is there a free self-hosted alternative to Acuity?
Yes. Both Cal.com and Easy!Appointments are open source and free to self-host, removing Acuity's per-calendar monthly subscription.
Which alternative is best for a salon or clinic with multiple providers?
Easy!Appointments is designed for exactly that, with built-in provider and service management for service businesses. Cal.com also handles multi-person scheduling via teams and round-robin.
Which is easier to self-host, Cal.com or Easy!Appointments?
Both are rated 3/5 difficulty. Cal.com edges ahead because it offers a One-Click deploy in addition to Docker and manual installation.
Do I need Squarespace to use these like Acuity?
No. Both Cal.com and Easy!Appointments are standalone and self-hosted, so you avoid the Squarespace ecosystem entirely and keep your booking data on your own server.
Is there a hosted version if I don't want to manage a server?
Cal.com offers an official managed cloud (managed:yes), so you can use it without self-hosting. Easy!Appointments is self-host only.