Hoverfly
Hoverfly Cloud is a hosted API simulation and mocking service for development and testing that should not rely on live API dependencies.
What Hoverfly is
Hoverfly Cloud is a hosted API simulation and mocking service for development and testing that should not rely on live API dependencies. It supports HTTP/S services including REST, SOAP, XML, JSON, and GraphQL. Users can capture and replay traffic, build simulations from OpenAPI specifications, and match requests by method, headers, parameters, and body. Simulations can delay replies, inject errors or faults, and modify responses. A CLI supports scripted configuration and integration into testing processes. Cloud plans begin with Developer at $10 a month, which provides two simulation instances and a 14-day free trial without requiring a credit card. The underlying Hoverfly framework is open source under Apache 2, but has no GUI and is generally run locally or within a user's infrastructure. Hoverfly and hoverctl binaries are available for macOS, Linux, and Windows, with Docker and Kubernetes installation described in its documentation. The maker identifies performance testing, functional testing, and development as primary uses. Enterprise supports up to 2,000 requests per second per instance and load-balanced clusters.
Good
- Supports REST, SOAP, XML, JSON, and GraphQL
- Can generate simulations from OpenAPI specifications
- Developer plan trial requires no credit card
- Underlying framework is open source under Apache 2
Watch out
- No free plan
- Open-source framework has no GUI
Who it suits
Hoverfly Cloud suits developers and teams simulating APIs for development, functional testing, or performance testing. The open-source framework may suit users who prefer a local or self-hosted setup.
Verdict
Hoverfly Cloud combines request matching and response behavior controls with a command-line workflow for testing pipelines. Choose between the hosted plans and the open-source framework based on whether you need a GUI and hosted simulations.
Plans and prices
From Hoverfly's own pricing page, checked 3 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Developer | $10 a month | 2 API simulation instances · 20 requests per second per instance · 14 day free trial · no credit card required |
| Professional | $30 a month | 5 API simulation instances · simulates latency and random failures · 14 day free trial |
| Enterprise | Priced on request | Fully customisable · unlimited API simulation instances · up to 2,000 requests per second per instance · load-balanced instance clusters · dedicated account manager |
The facts
Each one read from Hoverfly's own pages, with the date it was checked.
What it does
- API access
- The open-source framework provides a REST API and CLI, with native language bindings for Java and Python.checked 3 Oct 2026
- Dynamic behavior
- Hoverfly Cloud can delay responses, inject faults or errors, and modify responses while simulating requests.checked 3 Oct 2026
- License
- The open-source Hoverfly framework is distributed under the Apache 2 license.checked 3 Oct 2026
- Open source
- The underlying Hoverfly framework is open source, has no GUI, and is typically used locally or in a user's own network and infrastructure.checked 3 Oct 2026
- Pipeline integration
- Hoverfly Cloud provides a CLI for scripted configuration and integration into testing processes.checked 3 Oct 2026
- Protocols
- Hoverfly Cloud supports HTTP/S services including REST, SOAP, XML, JSON, and GraphQL.checked 3 Oct 2026
- Purpose
- Hoverfly Cloud is a hosted API simulation and mocking platform for testing without relying on live API dependencies.checked 3 Oct 2026
- Scale
- The pricing page lists Enterprise capacity of up to 2,000 requests per second per instance and load-balanced instance clusters.checked 3 Oct 2026
- Security and privacy
- The privacy policy says iOCO uses technical controls to protect personal details and does not share them with third parties for marketing; it does not state a named security certification.checked 3 Oct 2026
- Simulation features
- Users can capture and replay API traffic, generate simulations from OpenAPI specifications, and match requests by methods, headers, parameters, and bodies.checked 3 Oct 2026
- Support
- iOCO offers Hoverfly Cloud team support by email and support portal with a guaranteed response within one business day during 9am–6pm GMT.checked 3 Oct 2026
- Supported systems
- Hoverfly and hoverctl binaries are available for macOS, Linux, and Windows, and the documentation describes Docker and Kubernetes installation.checked 3 Oct 2026
- Use cases
- The maker describes performance testing, functional testing, and development as primary use cases for Hoverfly Cloud.checked 3 Oct 2026
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