The best open source alternative to Grindstone is Cattr. If that doesn't suit you, our users have ranked more than 50 alternatives to Grindstone and eight of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Grindstone are Task Coach, Tie Tracker, Produchive and Personal Task Manager.
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.
Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists. It is designed for composite tasks, and also offers effort tracking, categories, notes and more.
Tie Tracker is a free and open source time tracking application. Its is meant to be simple and aims to allow you to track working hours across projects.
An offline productivity app monitoring your activity, using open source LLMs to judge the productivity of the day for the target YOU have set. Your data is stored in your system.
PTM is an Open Source time tracking tool hosted by Sourceforge.net.
It looks like Windows Task Manager (see screenshots)
Have you ever suffer to answer to questions like...
humm... I used to have.
Mortimer is a fast, no-fluff time tracker built for freelancers and agencies who care more about getting paid than tracking every second.
Valot is a modern time tracking application built with GTK4 and Adwaita, designed for developers, freelancers, and professionals who need to track their work time efficiently.
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