Startup First Users might be a bit more popular than Black Rhinos by Sumo. We know about 1 link to it since March 2021 and only 1 link to Black Rhinos by Sumo. 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 recommend reading the free book "Black rhinos" https://sumo.com/stories/marketing-book this book is not only about marketing but about how people tested their ideas, build them from scratch, developing them. Source: almost 3 years ago
Cool little resource I found https://earlyusergrowth.com/startups/. Source: about 3 years ago
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