Ranked in these QuestionsQuestion Ranking
Pro Provides additional features (Ping, DNS Health, Traceroute)
Sometimes, your website is not the only culprit causing an increase in load times, its in such cases that you might require to use features such as DNS Health or Traceroutes, to diagnose the problem.
Pro Allows you to choose locations from where to conduct tests
This option can be helpful particularly in cases where most of your traffic originates from a specific location
Pro Provides an intuitive UI and sufficient features
Pingdom's UI is extremely easy to understand both for beginners (just looking for their overall scores) or nerds looking for in-depth analysis of their pages.