Bartib is a command-line time tracking tool that logs activities in plaintext files and provides flexible reporting options, making it suitable for straightforward personal time tracking.

A command-line application to track tasks, including start times, finish times, and durations for effective time management.

Ultimate Time Tracker (utt) is a simple Python-based command-line application for tracking time, designed for users seeking straightforward time logging.

Watson is a command-line interface (CLI) time tracking app for Linux and macOS, designed to help users track and manage their time efficiently. It is open-source and ideal for developers and users who prefer terminal-based workflows.

An extension for Timewarrior that generates invoices in LaTeX format based on tracked time data.

Chrono is a fast, Go-based time tracking tool with a simple interface, suitable for users who need efficient and straightforward time logging.