Kimai
Best open source
OpenProject alternative
Kimai is the #1 open-source time-tracking alternative for OpenProject. Learn how Kimai measures up to OpenProject, so you can choose the right solution for your business.
OpenProject
vs.
Kimai
Kimai vs OpenProject: Which time tracking software fits your team best in 2026?
Kimai is the #1 open-source time-tracking solution designed for teams and businesses seeking flexibility and control over their time tracking infrastructure. Discover why more than 5000 companies worldwide trust Kimai for their time tracking needs and find out how it compares to OpenProject’s offerings. Whether you’re evaluating a new time tracking app, analyzing OpenProject pricing options, or planning a OpenProject migration, Kimai provides a compelling alternative with superior features and cost savings.
Choosing the right time tracking software can make a huge difference in productivity, transparency, and billing accuracy of a freelancer, an agency, or a business owner managing a big team.
When selecting a time tracking tool, most users consider:
- Features: Does it cover everything from tracking and reporting to invoicing and project management?
- Price: Is it affordable (or even free) for the size of your team?
- Flexibility: Can it adapt to your current workflow, integrations, and tech stack?
- Accessibility: Does it support both desktop and mobile platforms, and can it be self-hosted or cloud-based?
- Scalability: Will it still fit your needs as your business grows?
The year 2026 also brings focus on data privacy, automation, and team transparency in time management tools. At the same time the market offers a range of solutions for every use case, from solopreneurs to large enterprise teams, and you can always find the solution that best fits your needs.
Let’s explore the best time tracking tools for 2026 and see how Kimai compares with Toggl Track — two popular choices among professionals and successful teams worldwide.
Kimai features most used
Not all time tracking tools are created equal. The best solutions for agencies offer a specialized set of features to streamline your workflows.
JSON API
Featuring an extensive JSON API for reading and writing data, so external apps and custom tools can communicate with Kimai.
Read moreCustomer Portal
Share client and project statistics and timesheets with anyone using a secret URL, optionally password protected.
Read moreTeams
Teams connects users into logical groups, like departments. Limit access to data by assigning customers and projects to your teams.
Read moreSAML
Log in and register users with SAML via your existing SSO identity provider, like Google Workspace, Authentik or Azure Active Directory.
Read moreInvoicing
Configurable invoice templates, options for entry grouping, configurable invoice numbers, and multiple formats like PDF and DOCX.
Read moreReports and analyses
Analysis of recorded times by users, customers, projects, activities, tags, time periods and more.
Read moreOpenProject: open source project management
OpenProject is an open source project management software for optimizing the collaboration of separated teams. It takes into account the entire project lifecycle. Features include project portfolio management and project and release planning. OpenProject offers a free Community Edition as well as an Enterprise Version, between €5.95 and €15.95 per user & month.
While OpenProject is a software with an extensive project-management feature set, it is not a time-tracking software. It can track time, but this is not it’s main purpose and many advanced time-tracking features are missing. Are you looking for an explicit time-tracker? Then Kimai might be the right choice for you.
Kimai is the best open source time-tracker alternative to OpenProject.
What users say about Kimai
At Kimai, we've designed our time tracking platform to meet the needs of agencies, teams, and freelancers. Our intuitive interface and powerful features help companies like yours work smarter and more profitably. You can now “listen” to the reviews of the real users.
We have been using Kimai for many years, initially as a standalone solution on our own server, but for the past three years now in the kimai.cloud. With its structured layout, Kimai meets the time tracking requirements we have as an architecture firm and can flexibly map all of our processes, which is not possible with many time tracking systems. We remain impressed by its reliability, constant maintenance and improvement, and direct, personal service, combined with absolutely fair pricing. We can (and already have) highly recommend kimai.cloud!
Bela Schwier
GeschäftsführerWe have been using Kimai for two years now to track the time spent on each phase of our projects and to bill our clients for the hours worked. The software is comprehensive, intuitive, and fully meets our needs. In addition to this, Kevin has always been helpful and attentive to our needs!
Alessandro Pollastri
DeveloperI love how I can combine time tracking, expense tracking, and invoicing into one app without features hidden behind nagging subscriptions. I can click one button to invoice my clients now! Seriously a godsend. Also, the clean UI is well thought-out and simple to learn. Highly recommend this one!
Isaac Mailach
Media Composer and Studio Cellistkimai is a super web for keeping tracks of our daily work, the interface is clean and very useful, just easy, couple clicks and data, and that is done. we have used since 5 years ago, and the reports are easy to run. only 1 time i have to support a ticket, because we forgot the password!. thanks for all the work here!
Mathias
IT ConsultingKimai runs on premise for us and is very reliable! I can only strongly recommend it. There is no better solution on the market!
Stefan Scherer
Inhaberthe best time tracking tool i used :) (and still do)
Paul Knulst
Senior Software EngineerThe platform is very easy to use, has great access for our analytics with a comprehensive API and the development team are incredibly responsive and helpful. We looked at and tried an awful lot of timesheet software, and Kimai is head and shoulders above the competition.
Sam Pollock
DirectorAll your time-tracking needs in one platform
Time is money, and tracking it effectively has become a necessity for project-based teams. Kimai is a powerful time-tracker that's been the favorite of many businesses worldwide. But how does it stack up against OpenProject? Dive into this comprehensive comparison to find out why businesses are choosing Kimai over OpenProject
See the difference
Compare Kimai vs. OpenProject: choose the options that make the most sense for your business.
Kimai
On-Premise
- Open source software :
- Available on-premises :
- Available in the cloud :
- Server location : Your choice
- Max. customers : Unlimited
- Max. projects : Unlimited
- Max. activities : Unlimited
- JSON API :
- Invoicing :
- Data export :
- SAML :
- Support : Forum (GitHub)
- Backups :
- TLS Certificate : Additional costs
- Custom domain : Additional costs
- Automatic upgrades :
- Server maintenance :
- IP access restriction :
- Custom content : Paid plugin
- Audit trail logs : Paid plugin
- Custom fields : Paid plugin
- Expense management : Paid plugin
- Task planning : Paid plugin
- Translations : Paid plugin
- Working hours, vacation, sickness, public holidays : Paid plugin
Kimai
Cloud
- Open source software :
- Available on-premises :
- Available in the cloud :
-
Server location
:
Hetzner Cloud
Germany (Falkenstein) - Max. customers : Unlimited
- Max. projects : Unlimited
- Max. activities : Unlimited
- JSON API :
- Invoicing :
- Data export :
- SAML :
- Support : Email, Forum
- Backups : Daily
- TLS Certificate :
- Custom domain :
- Automatic upgrades :
- Server maintenance :
- IP access restriction :
- Custom content :
- Audit trail logs :
- Custom fields :
- Expense management :
- Task planning :
- Translations :
- Working hours, vacation, sickness, public holidays :
OpenProject
Professional
- Open source software :
- Available on-premises :
- Available in the cloud :
- Server location :
- Max. customers : Unlimited
- Max. projects : Unlimited
- Max. activities : Unlimited
- JSON API :
- Invoicing :
- Data export :
- SAML :
- Support : Email, Forum, Phone (Germany)
- Backups : Manually
- TLS Certificate :
- Custom domain :
- Automatic upgrades :
- Server maintenance :
- IP access restriction :
- Custom content :
- Audit trail logs :
- Custom fields :
- Expense management : Partially
- Task planning :
- Translations :
- Working hours, vacation, sickness, public holidays :
Germany (Falkenstein)
Please note that the above information were manually compiled on 2024-11-19 from the OpenProject website. For the comparison, the best matching plans were chosen. Prices are subject to change. For the most current pricing, please visit the respective websites.
Kimai is open source
Kimai is #1 open-source time-tracking software, providing unparalleled transparency and flexibility. By choosing Kimai, you’re investing in a secure, cost-efficient solution with complete control over your data and the ability to customize it exactly as your team needs.
Self-host with complete control
Kimai offers a self-hosted edition that puts data privacy to the front. With on-premises deployment, you maintain complete control over your sensitive business information, ensure compliance with stringent data protection regulations, and achieve a level of security that's often challenging with cloud-only solutions. Plus, Kimai's API allows seamless integration with your existing tools and workflows.
EU-based data protection
If you decide to go with the cloud edition, you can be sure that your data is safe. With the headquarters located in Austria (EU), it is GDPR-compliant by default and all data is stored in Germany (Hetzner Cloud, Falkenstein). Learn more about our privacy-first approach
Conclusion
In today's digital age, data security is paramount. Kimai promises secure data protection and state-of-the-art encryption, ensuring that your business's sensitive information remains confidential.
Kimai offers a well-rounded solution that caters to a variety of workflows and use-cases for most project-based teams and companies. Its ease of use, integration capabilities, and commitment to data security and privacy make it a top choice for businesses seeking an efficient time-tracking software.