Super Productivity is an advanced todo list app with integrated Timeboxing and time tracking capabilities. It also comes with integrations for Jira, GitLab, GitHub and Open Project.

The break time reminder app

A fully featured productivity timer for the command line, based on the Pomodoro Technique. Supports Linux, Windows, and macOS.

Advanced Timeboxing Tool

A Pomodoro timer written in Gtk3 and Python for Linux desktops.