
Kimai
Self-hosted time tracking and timesheet app with projects, rates, reporting, invoicing exports, and extensions for teams and freelancers.

Kimai is a web-based time tracking and timesheet application for freelancers, agencies, and teams. It helps you record work time against customers/projects/activities, manage rates, and generate reports and exports for billing and payroll workflows.
Key Features
- Track time via browser UI with running timers and manual entries
- Organize work by customer, project, and activity with configurable rates
- Timesheets with filtering, approvals/validation workflows (via permissions) and comments
- Reporting and analytics with export options (e.g., CSV/Excel/PDF depending on setup/extensions)
- User, team, and role-based access control (RBAC) for multi-user environments
- Extensible via a plugin/extension system (marketplace) to add features (e.g., invoicing, expenses, additional reporting)
- API support for integrations and automation
- Internationalization (multi-language UI) and configurable currencies/time zones
Use Cases
- Freelancers tracking billable hours per client/project and exporting timesheets for invoicing
- Agencies tracking team time across projects with permission-controlled access and reporting
- Internal teams tracking effort for cost allocation, payroll inputs, or project analytics
Limitations and Considerations
- Some advanced features (e.g., invoicing/expenses, specialized reports) may require installing extensions rather than being included in the core
Kimai is a mature option for organizations that want full control of time tracking data while supporting multi-user workflows, reporting, and integrations. Its structured customer/project/activity model and extension ecosystem make it suitable from solo use up to team deployments.




