Based on our record, Facebook Design Resources seems to be more popular. It has been mentiond 2 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: over 3 years ago
ibis Paint X - Drawn with + ibisPaint
Designer Mill - Collection of Best Free Design Resources
Huion Sketch - Huion Sketch is an animation and drawing application that comes with all the tools and features, providing you ease when making a painting.
Interfacer - Collection of more than 200+ free design resources
Musée du Louvre - Musée du Louvre is a one-stop destination for you to explore the historical and modern artwork.
Freebiesbug - Collection of the best free web design resources.