Smocker vs WireMock
A side-by-side comparison of two self-hosted developer tools & git options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Smocker | WireMock |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 70 · Good | 85 · Excellent |
| Category | Developer Tools & Git | Developer Tools & Git |
| License | MIT | Apache-2.0 |
| Language | TypeScript | Java |
| Setup difficulty | Easy | Medium |
| Min. RAM | 128 MB | 512 MB |
| Deployment | docker, binary | docker, binary |
| GitHub stars | ★ 1,284 | ★ 7,380 |
| First released | 2019 | 2011 |
| Replaces | WireMock, Mockoon | Mockoon, Postman Mock |
What are Smocker and WireMock?
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
WireMock
WireMock is an open-source tool for mocking HTTP-based APIs and simulating service behavior. It can be run as a standalone self-hosted server for testing and development against virtualized dependencies.
- HTTP API mocking
- Request matching and stubbing
- Fault and latency simulation
- Record and playback
Smocker vs WireMock: key differences
Smocker is written in TypeScript, while WireMock is built with Java. Licensing differs — MIT for Smocker versus Apache-2.0 for WireMock. Smocker is the lighter option, starting around 128 MB of RAM against 512 MB for WireMock. WireMock is the more established project (first released 2011), while Smocker arrived in 2019. WireMock has the considerably larger community, at 7,380 GitHub stars versus 1,284.
Why pick each one
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)
Choose WireMock if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Mature project with 7.4k GitHub stars
- Written in Java
Frequently asked questions
Is Smocker or WireMock better?
Neither is universally better. WireMock 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 Smocker and WireMock free and open-source?
Yes. Smocker is licensed under MIT and WireMock under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Smocker and WireMock with Docker?
Smocker: yes. WireMock: yes.
Which is lighter on resources, Smocker or WireMock?
Smocker has the smaller minimum footprint at 128 MB of RAM, compared to about 512 MB for WireMock. Real-world usage depends on library size, user count, and enabled features.