Flow Tracker от Harshit negi

Flow Tracker is a minimal Firefox extension that tracks the time you spend on active browser tabs. It is designed with inspiration from Dieter Rams' design principles ("less, but better").

Core Features
Automatic Time Tracking: Records active tab usage in the background.
Analytics Dashboard:
Hourly Activity Chart: A 24-column bar visualization of your day.
Activity Timeline: A horizontal view of browsing sessions.
Domain Breakdown: A ranked list of sites by duration.
Historical Navigation: Allows browsing past data.
Productivity Insights: Identifies your most productive days and times.
Data Export: Option to download a CSV of your tracking history.