Kimai - Open Source time-tracker | WarmIndex

Kimai is an open-source, web-based time-tracking application for freelancers, teams, and organizations to manage timesheets, generate reports, create invoices, and more.

🚀 Overview

Kimai is a professional-grade open-source time-tracking solution that tracks work time, manages projects and customers, and provides on-demand summaries by year, month, day, customer, or project. It offers a browser-based interface accessible on desktops and mobiles, replacing manual tools like Excel spreadsheets.

This project solves the problem of inefficient and error-prone time tracking for project-driven teams by offering multi-user support, detailed analytics, invoicing, and extensibility. It's built for freelancers, agencies, software developers, small businesses, NGOs, and large organizations needing accurate time data for billing, budgeting, and productivity insights.

Developed with a focus on privacy (hosted in Germany), transparency, and quality, Kimai is trusted by over 5,000 customers with a 5.0 rating. Available as self-hosted open source or SaaS via Kimai Cloud.

✨ Key Features

Time tracking with multi-timer, punch-in/punch-out, tagging, and records by customer/project/activity
Customer and project management including budgets (time/money), rates, visibility, and teams for data isolation
Invoicing with customizable PDF/DOCX templates, grouping, and invoice numbering
Reports, statistics dashboard with charts, and exports in XLSX, PDF, CSV, HTML; lockable records
Multi-user with roles/permissions, multi-language (30+), multi-timezone support
Plugins (e.g., expenses, customer portal), JSON API for integrations
Optional: Upcoming features via roadmap on GitHub

🛠 Tech Stack

Frontend: Symfony, Twig, Bootstrap, Tabler UI, JavaScript, SCSS, CSS
Backend: PHP 8.1+, Symfony framework, Doctrine ORM
Database: MySQL/MariaDB
Auth: LDAP, SAML (Google Workspace, Azure AD), TOTP 2FA, Database
Hosting: Docker, self-hosted (Composer/Git), Kimai Cloud SaaS, Vercel-like but custom

👥 Who Is This For?

This project is useful for:

Freelancers who want to track billable hours, expenses, and invoice clients
Teams and agencies looking for project management, budgets, and team timesheets
Developers building integrations or self-hosting time tracking tools

📸 Screenshots / Demo

Live demo: https://www.kimai.org/en/demo.html
GitHub: https://github.com/kimai/kimai

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Open Source (completely free for self-hosting), Freemium (Kimai Cloud starts free; paid for teams/plugins/hosting). (Explain briefly: Self-host unlimited users free; Cloud for easy setup with optional upgrades.)

Is the source code available?

Yes — https://github.com/kimai/kimai

Can I contribute?

Yes — report bugs/feature requests via issues, submit pull requests, translate on Weblate, improve docs, or sponsor. Follow CONTRIBUTING.md and Code of Conduct.

📬 Contact & Links

Website: https://www.kimai.org/
GitHub: https://github.com/kimai/kimai
Twitter/X: https://twitter.com/kimai_org
Email: Use GitHub discussions/issues or site contact form

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