The best open source alternative to KTimeTracker is Hourglass. If that doesn't suit you, our users have ranked more than 100 alternatives to KTimeTracker and 19 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to KTimeTracker are Cattr, Kimai, Project Hamster and Floating Timer.
Hourglass is the most advanced simple countdown timer for Windows. Just enter a time in just about any format, and hit Enter.
Australia
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
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 …
Germany
EU
Project Hamster is time tracking for individuals. It helps you to keep track on how much time you have spent during the day on activities you choose to track.
United States
The Floating Timer app features both a countdown timer and stopwatch that will float on top of other running apps. This app is useful to time activities such as: Exam practice, gaming speed runs (speed-running), gaming boss fights, cooking.
NetherlandsEU
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.
Switzerland
Micro Timer is a tiny, microwave-inspired timer app for Android. Instead of inventing yet another clever, pretty, tedious method of inputing time, Micro Timer uses the tried-and-true 10-key pad commonly found on microwave ovens.
Traggo is a tag-based time tracking tool. In Traggo there are no tasks, only tagged time spans.
GermanyEU
TimeCult allows to create a hierarchy of projects and tasks, collect time metrics, quickly estimate used time per any project/task for a given time period, exchange data with Microsoft Excel and/or OpenOffice.org Calc.
Kapow is a punch clock program designed to easily keep track of your hours, whether you're working on one project or many. Simply clock in and out with the Start/Stop button. If you make a mistake in your hours, you can go back and edit any of the entries by double-clicking...
United States
Timer app with seamless GNOME integration accomplished by pretending to be a media player. Ultimately, serves the only purpose — to start a timer quickly and efficiently. Notifications included! Utilizing GTK4, Adwaita and MPRIS interface.
Ukraine
