The Progress Clocks plugin adds tracking tools to Obsidian, including progress clocks, counters, and stopwatches. Progress clocks are customizable pie-chart-style trackers, ideal for tracking tasks or progress in segments. Counters allow for simple number tracking with increment and decrement options, while stopwatches can measure time, with the ability to toggle between seconds and milliseconds. These tools are useful for project management, habit tracking, and time tracking within Obsidian. Users can also create inline clocks and counters that integrate directly into markdown notes, offering an interactive way to monitor progress without leaving the app.