Quick answer
Use the table first. RescueTime and Rize are stronger for automatic system-wide tracking. Opal is stronger for blocking and focus friction. Toggl Track and Clockify are stronger for timesheets and reporting. dTime is strongest when your main problem lives inside the browser and the same website can mean work in one moment and distraction in the next.
Which one should you choose?
Choose RescueTime or Rize if you want automatic tracking across your whole computer and you care more about broad visibility than browser nuance.
Choose Opal if your main need is stronger blocking, limits, and focus friction rather than analysis.
Choose Toggl Track or Clockify if you care most about timesheets, billing, client work, and team reporting.
Choose dTime if your biggest blind spot is what your browser time actually meant on mixed-use websites.
Where dTime fits
dTime is the one to choose when generic tracking is not enough. If one YouTube session is research and the next is drift, dTime is built around that distinction instead of flattening both into the same domain-level total.
If you want the personal backstory behind that idea, read I Built Detime After Watching Myself Press “15 More Minutes”.