I'm Rasmus.
I've spent the last decade building online marketplaces - ten of my own, and now the platform other founders use to launch theirs.
Prometora
I'm the founder of Prometora, where non-technical founders launch real marketplaces - listings, sellers, payments, payouts - without writing code.
YouTube
I make videos about marketplace building: how to start one, how the business model works, and original data from running the platform layer under real marketplaces.
The Marketplace Guy
I write The Marketplace Guy: a memo on building online marketplaces, with real numbers from the platform underneath them.
Track record
Some things I've built along the way: SerpMaze (a SERP tracker, acquired), Nordic Mugs, Speed Build Marketplace, My Spare Desk, NinjaBuzz, and a handful of others that taught me what not to do. The full story ends up in the newsletter.