Kimai

Leantime

Leantime is a lightweight, open-source project management platform designed to help small teams and freelancers plan, track, and deliver projects efficiently. It combines task management, time tracking, and collaboration tools in a single web‑based interface. Self‑hosted and free to use, Leantime integrates with popular services like GitHub and Slack, allowing teams to keep work organized without costly licenses. Its intuitive UI and extensive documentation make onboarding quick for any small group looking to streamline their workflow.

Clockify

Clockify is a time tracking and timesheet application that lets individuals and teams log work hours via a timer, manual entry, or automatic app/website tracking, then turns that data into reports, budgets, and invoices. It is used by teams at companies like HP, Verizon, and American Express, and remains free for unlimited users on its core plan.

Dayflow

Dayflow is an open-source and local-first software that privately turns your screen into a timeline of what you actually accomplished. It automatically tracks your work and provides a journal of your activities, helping you stay organized and focused.

Invoice Ninja

Invoiceninja is a source-available app that helps businesses manage their invoicing, quoting, projects, and time-tracking in one place. It is built with Laravel and offers a range of features to streamline financial management and improve productivity.

Super Productivity

Super Productivity is a free, open‑source web‑based tool that helps individuals and small teams organise work, track time and stay focused. It combines classic task lists, kanban boards and built‑in Pomodoro timers in a highly customizable interface. Because it runs in the browser and syncs via GitHub or local storage, you can access your projects from any device without paying for a subscription. The platform is community‑driven, offering extensions and integrations that adapt to a wide range of workflows.

worklenz

Worklenz is a free, open-source project management platform for teams and agencies, bringing projects, tasks, resource planning, and client collaboration into one workspace. Tasks can be viewed as a list, a Kanban board, or a Gantt chart, and time is logged directly against them. Alongside delivery it tracks budgets, costs, and team utilization, so project health and profitability stay visible. Worklenz can be self-hosted under AGPL-3.0 or used as a managed cloud service that has a free plan.