Based on our record, PM School Challenges 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.
Here's a website where companies post product challenges where PMs need to develop features or improve them. https://pmschool.io/product-challenges. Source: about 2 years ago
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