The best open source alternative to Project Hamster is ActivityWatch. If that doesn't suit you, our users have ranked more than 100 alternatives to Project Hamster and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Project Hamster are TimeScribe, Kimai, Cattr and HPR - Human Pattern Recorder.
Open-source, cross-platform app tracks time on devices, providing productivity insights, anti-procrastination tools, and Pomodoro timers in a privacy-focused, no third-party data system, customizable by user extensions, making it a versatile alternative to RescueTime and ManicTime.
Norway
TimeScribe lets you effortlessly start, stop, and pause your work time with just a click, ensuring a straightforward time tracking experience. The app provides an intuitive dashboard to monitor your daily activities, including breaks, and allows you to customize your weekly work...
Germany
EU
Kimai is a free open source time tracker. It tracks work time and prints out a summary of your activities on demand. Yearly, monthly, daily, by customer, by project, by action …
GermanyEU
Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux. The key features are built-in screenshot capture, activity detection.
Russia
HPR is a compiled C++23 activity tracker that runs completely offline with zero background servers, zero web UI, and zero telemetry.
India
Furtherance is a time tracking app. It allows you to track time spent on different activities without worrying about your data being captured and sold.
GermanyEU
Timewarrior is a command line time tracking application, which allows you to record time spent on activities. You may be tracking your time for curiosity, or because your work requires it. At its simplest, you tell it to start and stop tracking time.
SwedenEU
Watson is a command-line time-tracking tool written in Python. By default, all data is saved locally. It supports projects, tags, reporting, and CSV/JSON export. Data sync is supported with the optional self-hosted crick server.
FranceEU
Timed is an open source time tracking tool for self hosting, written in python (backend) and javascript (frontend).
Switzerland
Open-source time tracking application for personal and team productivity. Track your time, analyze performance, and boost productivity with our free, privacy-focused desktop app for Windows, macOS, and Linux.
Traggo is a tag-based time tracking tool. In Traggo there are no tasks, only tagged time spans.
GermanyEU
ARBTT, the Automatic Rule-Base Time Tracker, is a window logger that runs in background and logs for all opened windows:
