WireMock 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
Free tier available
Free tierFree and open source
Open sourceWhat drives the bill
The metric that actually scales your invoice.
Open source is free; WireMock Cloud is a paid hosted service for shared team mocks.
Free and open source. You pay in engineering time and CI minutes.
Free tier
Open-source WireMock is complete and free.
Everything, self-hosted
Open source
Apache-2.0
Apache-2.0
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Category standard
WireMock Inc. · since 2013
Emerging
SpectoLabs · since 2016
Strengths
- Fault and latency injection lets you test the error paths that never occur on demand in a real sandbox.
- Record-and-replay produces a realistic mock from live traffic quickly.
- Runs anywhere: embedded, standalone, container or cloud.
- 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
- Recorded stubs drift from the real service unless you re-record or verify contracts.
- Complex stateful scenarios get verbose in JSON.
- HTTP only — not for message queues or gRPC without extensions.
- Smaller community and slower development than WireMock.
- Proxy configuration in complex networks takes effort.
- Captured simulations need periodic refresh.
Best for
Teams whose integration tests depend on third-party HTTP services.
Teams needing lightweight service virtualisation against real recorded traffic.
All of these integrate with: JUnit, Docker, Kubernetes.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.