Css Inspector might be a bit more popular than Product Disrupt. We know about 1 link to it since March 2021 and only 1 link to Product Disrupt. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Product Disrupt - Curated List of Resources to Learn Product Design. Source: about 3 years ago
Yes, looks very similar: https://cssinspector.com/. - Source: Hacker News / almost 2 years ago
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CSS Scan Pro - The easiest way to get and edit the CSS of any website, live