Start with Community, add automation and extra features with a commercial licence.
Open source
Make your architecture discoverable, understandable and easy to share.
Open source. Yours to self-host.
For organisations of any size.
Free for internal company use.
No subscription required
Your documentation foundations:
Build a complete catalog at your own pace.
Unlock advanced features for your catalog. A plan that fits your organisation.
Single catalog scaled across the organization with automated workflows and AI capabilities.
Billed $5,388 annually · Save $600
Up to 250 employees
One fixed price. Unlimited readers and resources.
Self-service. No sales call.
All Community features, plus:
License for one catalog. Standard commercial licence and terms.
For larger organisations and teams that need federation or tailored support.
Custom annual pricing. Agreed for your organisation.
251+ employees
Also available at any size for enterprise capabilities.
Get a proposal for your organisation
All Business (Scale) features, plus:
Licence, services and invoicing agreed upfront.
A connected reference that changes how teams discover, maintain, and govern architecture.
Find the right owner
“With EventCatalog we now have a clear view of all events and schemas, and more importantly, we know who to reach out to when we want to consume data.”
Dennis BaertenFreelance Lead Engineer at NikeKeep architecture alive
“We use it both as a company-wide architectural overview and as living documentation generated directly from our code.”
Bart KardolEssentKeep change controlled
“EventCatalog, together with AsyncAPI and other specs, makes sure your architecture stays controlled, preventing it from spiraling into chaos.”
Fran MéndezCreator of AsyncAPIOnboard developers faster
“EventCatalog is what every developer should see on day 1 when they walk into a job. Not spend months piecing all the clues together.”
Nick TunePrincipal Consultant & Engineer at PayFitChoose Business (Scale) if your organisation has up to 250 employees and you want to buy online on standard terms. Choose Enterprise above 250 employees, or at any size if you need federation, a negotiated contract, or tailored onboarding and support.
No. EventCatalog brings value across your organisation, including engineers, architects, business analysts, product managers and others who need to understand how your systems and business processes connect. We use employee count to reflect that wider organisational value when pricing commercial plans. It refers to your organisation’s total employees, not paid seats or the number of people using EventCatalog. Every plan includes unlimited readers and resources, so everyone can benefit without a per-user charge.
Yes. Community is open source and free for internal company use at any organisation size. The 250-employee threshold applies to the Business (Scale) commercial plan.
Let us know before your next renewal so we can agree an Enterprise licence for the next subscription term. Adding readers or documenting more resources never triggers an upgrade.
Business (Scale) adds automated documentation, all official integrations, breaking-change detection, custom documentation, pages and APIs, MCP and AI features, updates and standard support. Enterprise adds federation, with licence scope, services and support agreed for your organisation.
Business (Scale) is $499 per month billed monthly, or $449 per month billed upfront at $5,388 per year. Annual billing saves $600 compared with paying monthly. Enterprise has custom annual pricing, with licence, services and invoicing agreed upfront.
Yes. Every plan is self-hosted. Keep your architecture documentation in your own infrastructure and your content in Git.
Choose Enterprise for a negotiated contract, purchase orders, procurement support or agreed invoicing. Business (Scale) is available online with standard commercial licence terms.
Self-hosted architecture documentation and governance for your organization.
