Open-source documentation tool for event-driven architecture.
EventCatalog monetizes primarily through recurring subscription payments for paid tiers aimed at teams and enterprises, while the core product remains open source and free. The product offers most features for free, but users must pay for additional features or licenses beyond the open source core.
“Last year, Event Catalog was kind of growing. And I get more customers, more users, and things started to become bottlenecks, right? I started to become bottleneck in terms of sales and contracts, whatever else, and the tooling and the features and everything else. So I was thinking to myself, he...”
“Feb 8, 2026 Growth Why I Spent All My Time Chasing New Customers and What I Learned When Renewals Hit What happens when you focus all your energy on acquisition and forget the people already paying you.”
“The product is open source at its core with paid tiers for teams and enterprises. Getting from free tool to $28K MRR has been the hardest and most rewarding thing I've done.”
“So how can you simplify it? Well, number one, will people pay for the product? That's something you got to understand and test. Number two, what's the simple way to get there is like, okay, well, here's the license key. Here is something I can give you for the product. And the way event catalog w...”