ActivityWatch

ActivityWatch automatically tracks how you spend time on your devices while keeping your data completely private. This open-source alternative to RescueTime and ManicTime stores all information locally on your device, ensuring your activity data never leaves your control.

Key features include:

• Automatic tracking of active applications and window titles
• Browser extensions for Chrome and Firefox to monitor web activity
• Editor plugins for tracking coding time across popular IDEs
• Category breakdown to organize your usage patterns
• Cross-platform support for Windows, macOS, Linux, and Android

Perfect for monitoring productivity, tracking project time, managing screen habits, or gaining insights into your digital behavior. The tool helps you understand work-life balance, identify behavioral trends, and measure time spent on different activities without compromising your privacy.

Built by volunteers and maintained by the Bjäreholt brothers, ActivityWatch serves researchers, developers, and anyone seeking "self-knowledge through numbers." The active community contributes plugins, extensions, and improvements to make this the most comprehensive privacy-focused time tracker available.