IMO Gumroad search and course discovery could be better and you can't really judge the practical usefulness of a course from its description/number of stars.
So I created a "hackernews" type directory of Gumroad courses that are ranked by user votes and searchable by category e.g. "Google", "Amazon Web Services", "Twitter", "Etsy" etc called Gumrank.
It also can also be used by creators to discover niches with sparse content so they can create courses to fill those voids.
I created it with a no-code tool in a few hours today after I got the idea. The learning experience was cool and it also enabled me to snag a domain name "gumrank.com" I didn't know was still available.
While the domain name is still propagating, you can access the website at https://gumrank.pory.app
P.S: I hope some creator out there finds it useful.
I am open to questions, suggestions, and feedback. Thank you very much