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Hoverfly

Lightweight service virtualization and API simulation

Developer Tools & Git ★ 2.5k stars Medium setup Apache-2.0

Hoverfly is a lightweight service virtualization tool that captures and simulates HTTP and HTTPS traffic for testing. It lets teams replace slow or unavailable dependencies with simulations.

Official siteSource code

Key features

  • Capture and replay traffic
  • Service virtualization
  • Latency and fault simulation
  • Lightweight Go binary

Strengths

  • Released under the Apache-2.0 license
  • First-class Docker support for quick deployment
  • Active community (2.5k GitHub stars)
  • Written in Go

Is Hoverfly secure?

No known vulnerabilities affect Hoverfly's latest release (v1.12.15). OSV.dev lists 5 past advisories for the project; none of them applies to this release. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

  • Most recent fixed advisory CVE-2026-50013, published 2026-09-11 (33 days ago), fixed in 1.12.8

Source: OSV.dev, checked 2026-10-14. How this is measured.

Hoverfly replaces

Self-hosted WireMock alternatives

Health badge

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SelfHostIndex: 89 · excellent

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<a href="https://selfhostindex.com/app/hoverfly/"><img src="https://selfhostindex.com/badge/hoverfly.svg" alt="SelfHostIndex health score for Hoverfly"></a>
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   :alt: SelfHostIndex health score for Hoverfly
   :target: https://selfhostindex.com/app/hoverfly/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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