Mockoon
Spin up a realistic mock API from a desktop app in under a minute.
What it is
Mockoon is a free desktop application and CLI for creating mock REST APIs with dynamic response templating, rule-based routing, proxying to a real backend for unmocked routes, and OpenAPI import and export. It is the fastest path from 'the backend does not exist yet' to a working front end.
Best for
Product tour
See Mockoon in action
Explore the interface before you make an account. Screenshots come from official product materials and may change as the tool evolves.
Desktop route editor
Define endpoints, response rules, headers and JSON bodies in the local desktop application.
Where it is strong
- Genuinely a minute from download to a working mock API.
- Dynamic templating with faker-style helpers produces realistic responses.
- Proxy mode mocks only the routes you need and passes the rest through.
Where it falls short
- Desktop-first; sharing mocks across a team needs the paid cloud or a committed config file.
- HTTP only.
- Less suited to complex stateful behaviour than WireMock.
Pricing
From $100 per month (Team, billed annually, up to 5 members)
Free tierFree tier: The desktop app and CLI are free and open source.
What drives the bill: Free locally and forever; the paid cloud tier adds hosted mocks and team sync. Team covers 5 members, 3 cloud-deployed mocks and 100k calls a month, with Enterprise on a quote. Work emails get a 14-day trial, others 7 days with a card.
Check current pricing on Mockoon’s siteFigures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.
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What people who use Mockoon say
No reviews of Mockoon yet. If you have used it in anger, yours would be the first.
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