SHSelfHostIndex

json-server 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.

Not the right match-up?
JS json-server Full fake REST API from a JSON file in seconds VS SM Smocker Simple and efficient HTTP mock server
Featurejson-serverSmocker
Deploy effortUnder-an-hour setupUnder-an-hour setup
Health score82 · Excellent70 · Good
CategoryDeveloper Tools & GitDeveloper Tools & Git
LicenseMITMIT
LanguageJavaScriptTypeScript
Setup difficultyEasyEasy
Min. RAM128 MB128 MB
Deploymentsource, dockerdocker, binary
GitHub stars★ 75,721★ 1,284
First released20142019
ReplacesMockoon, Postman MockWireMock, Mockoon

What are json-server and Smocker?

json-server

json-server is an open-source tool that creates a full fake REST API from a single JSON file with zero coding. It is widely used for prototyping and self-hosted mock backends during development.

  • Instant REST API
  • JSON file backend
  • Full CRUD support
  • Custom routes

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

json-server vs Smocker: key differences

Json-server is written in JavaScript, while Smocker is built with TypeScript. Json-server is the more established project (first released 2014), while Smocker arrived in 2019. Json-server has the considerably larger community, at 75,721 GitHub stars versus 1,284.

Why pick each one

Choose json-server if…

  • Zero-code setup
  • Instant REST endpoints
  • Great for prototyping

Watch out for

  • Not production-grade
  • Node.js required
json-server details

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)
Smocker details

Frequently asked questions

Is json-server or Smocker better?

Neither is universally better. json-server has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.

Are json-server and Smocker free and open-source?

Yes. json-server is licensed under MIT and Smocker under MIT. Both can be self-hosted at no software cost.

Can I run json-server and Smocker with Docker?

json-server: yes. Smocker: yes.

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