Microcks 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 | Microcks | 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 | Java | TypeScript |
| Setup difficulty | Medium | Easy |
| Min. RAM | 1,024 MB | 128 MB |
| Deployment | docker, kubernetes, helm | docker, binary |
| GitHub stars | ★ 2,048 | ★ 1,284 |
| First released | 2017 | 2019 |
| Replaces | Postman Mock, WireMock | WireMock, Mockoon |
What are Microcks and Smocker?
Microcks
Microcks is an open-source CNCF tool for mocking and testing APIs and microservices based on OpenAPI, AsyncAPI, and gRPC specs. It can be self-hosted to provide mocks and contract testing.
- Spec-driven mocks
- Contract testing
- AsyncAPI and gRPC support
- Kubernetes native
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
Microcks vs Smocker: key differences
Microcks is written in Java, while Smocker is built with TypeScript. Licensing differs — Apache-2.0 for Microcks versus MIT for Smocker. Smocker is the lighter option, starting around 128 MB of RAM against 1,024 MB for Microcks. Microcks is the more established project (first released 2017), while Smocker arrived in 2019.
Why pick each one
Choose Microcks if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Active community (2k GitHub stars)
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 Microcks or Smocker better?
Neither is universally better. Microcks 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 Microcks and Smocker free and open-source?
Yes. Microcks is licensed under Apache-2.0 and Smocker under MIT. Both can be self-hosted at no software cost.
Can I run Microcks and Smocker with Docker?
Microcks: yes. Smocker: yes.
Which is lighter on resources, Microcks or Smocker?
Smocker has the smaller minimum footprint at 128 MB of RAM, compared to about 1,024 MB for Microcks. Real-world usage depends on library size, user count, and enabled features.