Hoverfly vs Smocker
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Hoverfly | Smocker |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 86 · Excellent | 70 · Good |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | Apache-2.0 | MIT |
| Language | Go | TypeScript |
| Setup difficulty | Medium | Easy |
| Min. RAM | 128 MB | 128 MB |
| Deployment | docker, binary | docker, binary |
| GitHub stars | ★ 2,523 | ★ 1,284 |
| First released | 2016 | 2019 |
| Replaces | WireMock | WireMock, Mockoon |
What are Hoverfly and Smocker?
Hoverfly
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.
- Capture and replay traffic
- Service virtualization
- Latency and fault simulation
- Lightweight Go binary
Smocker
Smocker is a lightweight HTTP mock server designed for testing, with a clean UI for defining mocks and inspecting captured requests. It is easy to run in CI environments.
- Lightweight mock server
- Web UI for mocks
- Request history inspection
- YAML mock definitions
Hoverfly vs Smocker: key differences
Hoverfly is written in Go, while Smocker is built with TypeScript. Licensing differs — Apache-2.0 for Hoverfly versus MIT for Smocker. Hoverfly is the more established project (first released 2016), while Smocker arrived in 2019.
Why pick each one
Choose Hoverfly if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Active community (2.5k GitHub stars)
- Written in Go
Choose Smocker if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- First-class Docker support for quick deployment
- Active community (1.3k GitHub stars)
Frequently asked questions
Is Hoverfly or Smocker better?
Neither is universally better. Hoverfly has the larger community, while Smocker is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Hoverfly and Smocker free and open-source?
Yes. Hoverfly is licensed under Apache-2.0 and Smocker under MIT. Both can be self-hosted at no software cost.
Can I run Hoverfly and Smocker with Docker?
Hoverfly: yes. Smocker: yes.