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testcritic

Mockoon vs Hoverfly

Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.

Entry price

From $100 per month (Team, billed annually, up to 5 members)

Free tier

Free and open source

Open source

What drives the bill

The metric that actually scales your invoice.

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.

Free and open source. You pay in engineering time and CI minutes.

Free tier

The desktop app and CLI are free and open source.

Everything, self-hosted

Open source

MIT

Apache-2.0

Self-hostable

No-code authoring

Languages

JavaScriptCodeless
GoJavaPythonCodeless

Platforms

API
API

Fits teams

Solo / side projectStartupScale-up / mid-market
Scale-up / mid-marketEnterprise

Adoption

Widely used

Mockoon · since 2017

Emerging

SpectoLabs · since 2016

Strengths

  • 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.
  • Capture mode produces a realistic simulation from live traffic with no authoring.
  • Latency injection makes it useful for performance and resilience testing too.
  • Small footprint — a single Go binary.

Limitations

  • 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.
  • Smaller community and slower development than WireMock.
  • Proxy configuration in complex networks takes effort.
  • Captured simulations need periodic refresh.

Best for

Front-end developers unblocking themselves while a backend is still being built.

Teams needing lightweight service virtualisation against real recorded traffic.

All of these integrate with: Docker, Jenkins.

Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.