Kimai is a free, open-source time-tracking app for freelancers and teams. Compare self-hosted vs Kimai Cloud pricing, features, and alternatives.
Researched and fact-checked by Bartu Cavusoglu · Updated July 18, 2026
Kimai is an open-source time-tracking application that began in 2006 and has been led since 2009 by Vienna-based developer Kevin Papst, who rewrote the codebase and grew it into a leading open-source time-tracking tool used by freelancers, agencies, and companies.
The AGPL-licensed core is free to self-host with unlimited users, while Kimai Cloud offers a fully managed, GDPR-compliant SaaS alternative hosted in Germany for teams that don't want to run their own server.
Time is tracked against a hierarchy of customers, projects, and activities, and invoices are generated directly from recorded hours, removing manual estimation and spreadsheet work.
Kimai includes an extensive JSON API, two-factor authentication, and single sign-on via LDAP and SAML with providers like Google Workspace and Azure AD.
Official plugins extend the core with advanced invoicing, custom reporting, multi-step approval workflows, and expense tracking.
Kimai Cloud's Professional tier adds working-hour accounts, vacation and sick-leave tracking, a customer portal, kiosk mode, daily backups, and custom domains with SSL.
Self-hosted Kimai is entirely free under the AGPL license with no user limits. Kimai Cloud is priced per user per month, with a Standard plan from EUR 2.99/user/month (annual) and a Professional plan from EUR 3.99/user/month (annual), plus a discounted EUR 0.99/user/month rate for non-profits.
All Kimai Cloud plans include a 30-day free trial, no setup fees, and month-to-month cancellation.
Yes, the self-hosted core is free and open source under the AGPL license. Kimai Cloud is a paid managed hosting option starting at EUR 2.99 per user per month.
Kimai began in 2006 under Torsten Hoeltge, and has been developed since 2009 by Vienna-based developer Kevin Papst.
Self-hosted Kimai is free open-source software you run on your own server, while Kimai Cloud is a paid, fully managed SaaS version hosted in Germany.
Yes, Kimai generates invoices directly from recorded billable hours, with advanced invoicing templates available via plugins or the Professional Cloud plan.
Kimai Cloud plans include a 30-day free trial with no setup fees.
Common alternatives include Toggl Track, Clockify, Harvest, and TimeCamp.