Sold by: cloudimg
Deployed on AWS
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This product has charges associated with it for seller support. Baikal, the open source self-hosted CalDAV and CardDAV server, preinstalled with PHP 8.3, nginx and SQLite. A per instance administrator password is generated on first boot. Backed by 24/7 cloudimg support.
Overview
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Baikal admin sign-in
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Baikal dashboard
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Baikal users
This is a repackaged open source software product wherein additional charges apply for cloudimg support services.
Overview Baikal is an open source self-hosted CalDAV and CardDAV server. It lets you sync calendars and contacts across all of your devices, phones, tablets and desktops, using the open CalDAV and CardDAV standards, while keeping that data private on infrastructure you control. This image delivers Baikal fully installed and configured, so a complete calendar and contact sync service is running within minutes of launch. The current release available is Baikal 0.11.
Application Stack Baikal is built on the proven Sabre/dav library. PHP 8.3 with OPcache and every extension Baikal requires. nginx web server. SQLite storage, so the appliance is fully self-contained with no separate database server to manage. The configuration, SQLite database and DAV data are kept on a dedicated, independently resizable data volume.
Secure First Boot On the first boot of your instance a one shot service generates a fresh Baikal administrator password, unique to that instance, regenerates the application encryption key, and writes the credentials to a root only file. No shared or default credentials ship in the image.
Ready To Use The Baikal code tree, document root, web server and database are all configured and the browser setup wizard is already completed. Browse to the instance address and sign in to the admin console to create users, calendars and address books. Point any CalDAV or CardDAV client at the instance to sync calendars and contacts.
cloudimg Support 24/7 technical support by email and chat. Help with Baikal deployment, upgrades, client configuration, performance tuning, and storage administration.
Use Cases A private self-hosted calendar and contact sync service. A self-hosted alternative to commercial calendar and contact platforms. Shared team calendars and address books. CalDAV and CardDAV synchronisation across desktop and mobile clients.
All product and company names are trademarks or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Highlights
- Baikal CalDAV and CardDAV server preinstalled and ready, with PHP 8.3, nginx and self-contained SQLite storage and no setup wizard to complete
- Hardened first boot generates a fresh Baikal administrator password and encryption key for every instance and stores them in a file only the root user can read
- 24/7 technical support from cloudimg, with expert assistance for Baikal deployment, client configuration, upgrades and storage administration
Details
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Delivery method
Delivery option
64-bit (x86) Amazon Machine Image (AMI)
Latest version
Operating system
Ubuntu 24.04
Deployed on AWS
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Pricing
Free trial
Try this product free for 7 days according to the free trial terms set by the vendor. Usage-based pricing is in effect for usage beyond the free trial terms. Your free trial gets automatically converted to a paid subscription when the trial ends, but may be canceled any time before that.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time. Alternatively, you can pay upfront for a contract, which typically covers your anticipated usage for the contract duration. Any usage beyond contract will incur additional usage-based costs.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
If you are an AWS Free Tier customer with a free plan, you are eligible to subscribe to this offer. You can use free credits to cover the cost of eligible AWS infrastructure. See AWS Free Tier for more details. If you created an AWS account before July 15th, 2025, and qualify for the Legacy AWS Free Tier, Amazon EC2 charges for Micro instances are free for up to 750 hours per month. See Legacy AWS Free Tier for more details.
Dimension | Description | Cost/hour |
|---|---|---|
m5.large Recommended | m5.large | $0.08 |
t3.micro | t3.micro instance type | $0.04 |
t2.micro | t2.micro instance type | $0.04 |
i3.8xlarge | i3.8xlarge instance type | $0.24 |
i7ie.large | i7ie.large instance type | $0.08 |
m6idn.8xlarge | m6idn.8xlarge instance type | $0.24 |
r5b.16xlarge | r5b.16xlarge instance type | $0.24 |
i7i.12xlarge | i7i.12xlarge instance type | $0.24 |
m8azn.large | m8azn.large instance type | $0.08 |
c8in.xlarge | c8in.xlarge instance type | $0.12 |
Vendor refund policy
Refunds available on request.
Legal
Vendor terms and conditions
Upon subscribing to this product, you must acknowledge and agree to the terms and conditions outlined in the vendor's End User License Agreement (EULA) .
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Delivery details
64-bit (x86) Amazon Machine Image (AMI)
Amazon Machine Image (AMI)
An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
Initial release of Baikal 0.11.
Additional details
Usage instructions
Connect via SSH on port 22 as the default login user for your operating system variant (the user guide lists it per variant). Baikal is served on port 80. Browse to http://<instance-public-ip>/admin/ and sign in as the 'admin' user. Retrieve the generated administrator password with: sudo cat /root/baikal-credentials.txt. Point CalDAV/CardDAV clients at http://<instance-public-ip>/dav.php/. To enable HTTPS, follow the Let's Encrypt section of the user guide.
Resources
Vendor resources
Support
Vendor support
cloudimg provides 24/7 technical support for this product by email and live chat. Our engineers help with deployment, configuration, updates, performance tuning and troubleshooting; critical issues receive a one hour average response. Contact support@cloudimg.co.uk .
AWS infrastructure support
AWS Support is a one-on-one, fast-response support channel that is staffed 24x7x365 with experienced and technical support engineers. The service helps customers of all sizes and technical abilities to successfully utilize the products and features provided by Amazon Web Services.
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Self-hosted calendar and contacts server. Sync calendars and address books across all devices with CalDAV and CardDAV protocol support.
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