Based on our record, UI Guideline seems to be more popular. It has been mentiond 1 time since March 2021. 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.
I'm working on updating the list of references for http://uiguideline.com v2 Since there're many Design Systems and UI Libraries, it'll be an ongoing task. Here is the link to my work in real-time and in progress. - Source: Hacker News / 6 months ago
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