Based on our record, pttrns should be more popular than Facebook Design Resources. It has been mentiond 3 times 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.
Spotify isn't doing anything unique here, and it's not really a marketing campaign to explain away their UI. It's more of a showcase for hiring professionals, developers/designers/etc. Facebook has a similar one -> https://design.facebook.com/. Source: almost 3 years ago
Also, read anything published by Design @ Facebook. Source: about 3 years ago
While I'm aware that there are current resources out there such as Mobbin or Pttrns, I have been taking my own screenshots for a while now and it would be great to be able to set up tags to categorise and organise these. Source: almost 3 years ago
Https://pttrns.com/ is a similar site but the quality went down a bit. Source: almost 3 years ago
Maybe try mobbin.design or https://pttrns.com/. Source: about 3 years ago
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