Open Source

I love open-source software - Kimai is open-source and will ever be, that is a promise!

No vendor lock-in

Vendor lock-in can cost a lot, not just in cash but also in hours. With Kimai, you can host it yourself, have me host it for you, or fork it and change it. You're never locked into a hosted product, and all of your data is easy to export so that if you ever decide Kimai isn't for you anymore, your data is still yours (the same applies to the paid plans, I offer data export upon cancellation).

Learn more about the open source version at

Always transparent

With closed source software, you have only the vendor's claims that they're keeping the software secure and adhering to standards. The visibility of the code behind open source software means you can see for yourself. You can always see my responses to the community, the release schedule and milestones, and every commit and pull request review.

Learn more about the code behind Kimai at the GitHub repository.

Which Kimai is right for you?

Open Source

I take care of the software, you take care about the hosting, updates and security.


Get up and running in seconds, leave the hosting and update to me, you take care of your core business.

Version comparison

Self-Hosted Cloud
Number of users Unlimited Unlimited
Number of customers Unlimited Unlimited
Number of projects Unlimited Unlimited
Number of activities Unlimited Unlimited
Invoice printing
Data export
Community Forum
Working time accounts (holiday, public holidays, sickness) Paid plugin
Audit-Log Paid plugin
Custom fields Paid plugin
Expense tracking Paid plugin
Task planning Paid plugin
Customization of displayed labels Paid plugin
Personal support
Automatic Backups
SSL Certificate (TLS) included
Custom domain incl. SSL With additional costs
Access restriction via IP
Automatic Updates
Server Maintenance
Priority for feature requests
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or check the feature comparison