Cal.rs Hosting Live In 5 Minutes

Cal.rs hosting on xCloud gives you a self-hosted scheduling booking page: share a link, and guests pick a slot from your real availability. Deploy Cal.rs from the OneClick catalog and xCloud starts the pinned single container with its embedded SQLite database, creates your administrator from the email you enter and a generated password, closes open registration, mounts a data volume and publishes the booking pages over HTTPS on your domain.

Deploy your Cal.rs

No terminal
No technical skills needed
No lock-in, cancel anytime

What is Cal.rs?

calrs, shortened to Cal.rs, is an open-source scheduling platform built in Rust. Its README sums it up as fast, self-hostable scheduling, like Cal.com but written in Rust: you connect your CalDAV calendar, define bookable meeting types and share a link, with no Node.js, no PostgreSQL and no subscription. It lists event types with buffers and notice, an availability engine, recurring-event support, reschedule and approval flows, booking limits, teams and dynamic group links. Self-hosted Cal.rs is a self-hosted booking page you run yourself, in place of a service such as Calendly. The project is AGPL-3.0 licensed.

On xCloud, this template deploys Cal.rs 1.19.0 as the community image, pinned by digest, in one container with an embedded SQLite database on the calrs_data volume, which also holds the key that protects stored calendar and SMTP passwords. HTTPS is on your domain. Open registration is switched off after install, booking pages are public by design, and Google Calendar is not supported.

From Sign-Up to a Live Booking Page In Just 3 Easy Steps

Self-hosting a scheduler normally means a container, an administrator account, closing open registration, a volume, a domain and a certificate before the first booking. This is the same result without assembling any of it.

Step 01
Sign Up
Create your xCloud account and pick Cal.rs from the OneClick catalog. Choose your domain and target server, then enter the administrator email — that is the only field.
Step 02
We Deploy It For You
One click. We bring up the community Cal.rs image, pinned by immutable digest, as a single container with an embedded SQLite database, create the administrator, switch off open registration, mount the calrs_data volume, generate the password and publish it over HTTPS on your domain.
Step 03
Create Your First Event Type
Save the generated administrator password from the installation credentials, open your HTTPS Cal.rs URL and sign in at /auth/login. Create your first event type and share its public booking link.

Everything Cal.rs Does, On Your Own Server

Cal.rs runs in full here: event types, public booking pages and team booking on your own domain, with the database in the same container.

Public Booking Pages
Visitors pick a slot from the availability you publish, with a guest timezone picker and month, week and list views of the slot picker.
Event Types And Availability
Each event type carries a duration, buffer times, minimum notice and an availability schedule, with optional host approval before a booking is confirmed.
Team Booking
Teams can book in round-robin mode, where any free member is assigned, or collective mode, where all members must be free.
CalDAV Calendar Sync
Connect a CalDAV calendar such as Nextcloud, Fastmail or iCloud so existing events block your availability. Google Calendar is not supported by upstream.
Email Notifications
Optional SMTP settings send booking, cancellation and approval emails with .ics calendar invites.
Closed Registration
Open registration is switched off after install, so only the administrator you created can sign in until you change it in the admin settings.

Everything You Need To Run Your Booking Pages 24/7

Managed hosting for Cal.rs, so the parts that keep it online are not your problem.

Cal.rs 1.19.0 deployed instantly
Community image pinned by digest
Administrator password generated for you
Kept behind xCloud nginx
Free SSL certificate
Server backups and snapshots
Server security updates included
Choose your server region
Unused balance refunded

What You Can Do With Cal.rs

Share one link for booking a call
A freelancer or consultant defines a 30-minute intro call with buffers and minimum notice, shares the booking link, and guests choose a slot from the availability Cal.rs computes.
Block time from your real calendars over CalDAV
A host connects a CalDAV calendar such as Nextcloud, Fastmail or iCloud, so existing events block slots, and confirmed bookings are written back to that calendar.
Round-robin bookings across a support team
A team creates a public event so that any free member can take the call, with the least-busy member assigned, or requires all members to be free for a collective meeting.
Approve bookings before they are confirmed
A host turns on confirmation mode and approves or declines each pending booking from the dashboard or the email, and guests and hosts can reschedule instead of cancelling.

Cal.rs Screenshots

Cal.rs dashboard after signing in as the administrator

Cal.rs event type created in the dashboard

Cal.rs public booking page showing the published availability

Cal.rs vs Alternatives

Calendly: Calendly is a hosted scheduling service. Cal.rs is AGPL-3.0 software on a server you rent, with bookings and calendar credentials in a SQLite volume you control, and it has no subscription of its own.
Cal.com: Upstream describes Cal.rs as like Cal.com but written in Rust. It is a separate project with no affiliation, and Cal.com has its own OneClick page. This page makes no feature-parity claim.
Rallly: Rallly is a separate tool for polling a group to find a meeting time, with its own OneClick page. Cal.rs publishes your availability for others to book instead of running a poll.
Tymeslot: Tymeslot is another self-hosted meeting scheduler with its own OneClick page and its own technology. Choose Cal.rs for its CalDAV sync, teams and single-container SQLite footprint.

Simple Pricing. Everything Included.

Dedicated Cloud VPS sizes, pre-configured for Cal.rs hosting. Pick the one that fits, and resize any time.

Cloud VPS 6 GB

Cloud VPS 16 GB

More headroom if Cal.rs sits alongside other apps on the same server.

$59.99per month

16 GB RAM
6 vCPU cores
200 GB NVMe SSD
30 TB
Unlimited

Get started

Every size is a dedicated Cloud VPS we provision, patch, monitor and restore. Billed monthly with no lock-in — delete the server and the unused balance comes back to your account. Cal.rs itself is licensed by its maintainers under AGPL-3.0.

Docker hosting

Already Have a Server? Bring Your Own

Connect any VPS — DigitalOcean, Vultr, Linode, AWS, Hetzner or bare metal — and deploy Cal.rs on it through the same panel, for a per-server management fee instead of a Cloud VPS rental.

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$4per server / month

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The same platform, discounted at 11+ servers.

$3per server / month

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Unlimited sites
All features included
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Priced per connected server, so your rate adjusts automatically as you add or remove servers. You pay your own provider for the server itself.

Self-managed hosting

Ready To Run Your Own Booking Pages?

Cal.rs on xCloud runs on a dedicated Cloud VPS that we provision, patch, monitor and restore. Deploy faster. Own the server. Stay in control.

Fast Provisioning
Deploy faster using an xCloud Managed Server built with optimized stacks and high-speed SSDs.
Enterprise-grade security
Protect your infrastructure with a free SSL certificate and more advanced security features at no additional cost.
Intuitive Control Panel
From Server creation to application deployment, everything can be managed from our intuitive control panel.

Hear what people are saying about us

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Frequently Asked Questions

Feel free to contact us with any questions or concerns you may have.

Is Cal.rs free?

Yes. Cal.rs is open source under AGPL-3.0, linked from this page at the pinned v1.19.0 tag, and its README promises no subscription. xCloud bills for the Cloud VPS under it, not for Cal.rs. It is not Cal.com and is not affiliated with it. Outgoing email needs an SMTP account of your own.

Can you run Cal.rs with Docker?

Yes, and this Cal.rs Docker hosting template does it for you: the community ghcr.io/olivierlambert/calrs image, pinned by digest, runs as one container with an embedded SQLite database on your own server, not in a Cal.rs cloud account, with HTTPS in front of port 3000 and no separate database service.

How much RAM does Cal.rs need?

The template manifest asks for 128 MB of RAM, 1 CPU core and 2 GB of disk as a floor, because it is a single Rust binary with SQLite and no Node.js or PostgreSQL. The 6 GB tier sold here dwarfs the floor and leaves space for other apps.

Does Cal.rs sync with Google Calendar?

Not directly. Upstream's sync is CalDAV only, so there is no Google Calendar integration. It suggests bridging through a CalDAV server that can subscribe to a Google calendar, such as Nextcloud's calendar app. This page does not claim Google Calendar support, and that bridge was not tested by xCloud.

Which calendars does Cal.rs sync with over CalDAV?

Upstream lists any CalDAV server, naming Nextcloud, BlueMind, Fastmail, iCloud, Zimbra, SOGo and Radicale, with provider presets and auto-discovery. Confirmed bookings are written back to the host's calendar. CalDAV sources were not exercised in xCloud's verification, so test yours after install.

Does Cal.rs support team booking?

Yes. Upstream lists unified teams with round-robin scheduling, where the least-busy free member is assigned, and collective scheduling, where all members must be free, plus team admins and public or private team pages. Dynamic group links combine usernames in a URL for an ad-hoc meeting without creating a team.

Can anyone create an account on my Cal.rs server?

No. The first start creates your administrator and switches open registration off, so visitors cannot create accounts. You can allow sign-ups, or restrict them to your own email domain, in the admin settings. Booking pages remain public by design, so anyone with a link can submit a booking.

How do I back up Cal.rs?

Include the calrs_data volume in your backup: it holds the SQLite database and the generated encryption key. Stored calendar and SMTP passwords are encrypted with that key, so losing the volume loses them. Use an SQLite-aware copy, keep it off the server, and test a restore.

Backup and restore Docker apps

How do I upgrade Cal.rs?

Upgrades are not automatic. Your install stays on Cal.rs 1.19.0, pinned by digest, until you adopt a newer template version. Before you do, back up the calrs_data volume, which holds the database and its encryption key, and read upstream's release notes. A newer template version changes nothing on an existing site until you adopt it.

Is Cal.rs an alternative to Cal.com?

Upstream describes it as like Cal.com but written in Rust, with no Node.js, PostgreSQL or subscription. It is a separate project that is not affiliated with Cal.com, so this page makes no feature-parity claim. Cal.com has its own OneClick page if you prefer it.

Cal.com hosting

How do I sign in the first time?

Sign in at /auth/login on your domain with the administrator email you entered and the generated password from the credentials card. The administrator is created on the first start. Change the password inside Cal.rs afterwards, because editing the install values later has no effect on the account.

Can I cancel anytime?

Yes. There is no lock-in — cancel any time. Hosting is billed monthly and charged for what you actually use, so when you delete the server the unused balance is refunded to your account, less up to 10% in payment-processing fees.