Kimai is a free, open-source time tracking software supporting unlimited users and timesheet entries. It offers a responsive design, plugin support, and multi-language capabilities, making it highly suitable for teams and individuals needing flexible, extensible time tracking.

ActiveCollab is a project management tool with built-in time tracking, allowing detailed monitoring of hours by project, client, and task. It supports timesheet management, reporting, budgeting, and resource tracking, aiding in comprehensive work time analysis.

Clockly is a project time tracking software that helps teams boost productivity by monitoring employee activity, managing timesheets and payroll, and providing detailed reports on time and attendance. It offers features like activity screenshots, app and location monitoring, and engagement tracking.

dotProject is a web-based, multi-user project management application that includes time tracking functionalities, enabling teams to log hours spent on projects.

Jibble is a free and open-source time tracking solution featuring instant face recognition, GPS tracking, offline clock-ins, activity and project tracking, and timesheet management, tailored for teams and organizations.

An advanced open-source time tracking solution with features for team collaboration, real-time tracking, reporting, organization and project management, and export capabilities.