Microsoft Clarity
Free heatmaps and session replays — watch how visitors actually use your site before optimizing.
Why it's listed
When you can't put a finger on what's wrong with a page, Clarity's heatmaps and session recordings show you. It's completely free, no traffic limits, so you can spot friction and dead clicks instantly — perfect for diagnosing UX issues before you start any A/B test. Unlike paid tools, you won't hit a wall as your traffic grows.
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Similarweb
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