Super Productivity is a free and open-source advanced todo list app with integrated timeboxing and time tracking capabilities. It offers features like timesheets, work summaries, Pomodoro timer, and integrations with popular project management platforms, making it suitable for task and time management.

myAgilePomodoro is a free open-source desktop time-tracking application that combines the Pomodoro technique with Agile task management. It supports multi-language, portable usage, and integrates time and task tracking with reporting features.

Toggl Desktop is an open-source client for Toggl's time tracking platform, offering features such as idle detection, reminders, and a Pomodoro timer to optimize time management.

aitrack.work is a minimal, open-source self-hosted task-based time tracker for everyday use, enabling users to organize and monitor time spent on tasks.

A lightweight web app that boosts productivity using the Pomodoro technique, incorporating time-tracking features.

Doug is a command-line time tracking utility that helps users track their work hours and tasks efficiently from the terminal. Suitable for developers and users who prefer CLI-based time management tools.