json-server vs Semaphore UI

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?
Featurejson-serverSemaphore UI
CategoryDeveloper Tools & GitDeveloper Tools & Git
LicenseMITMIT
LanguageJavaScriptGo
Setup difficultyEasyEasy
Min. RAM128 MB256 MB
Deploymentsource, dockerdocker, binary, bare-metal
GitHub stars★ 75,695★ 13,973
First released20142017
ReplacesMockoon, Postman MockAnsible Tower, AWX

Why pick each one

Choose json-server if…

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • First-class Docker support for quick deployment
  • Mature project with 75.7k GitHub stars
json-server details

Choose Semaphore UI if…

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • First-class Docker support for quick deployment
  • Mature project with 14k GitHub stars
Semaphore UI details

Frequently asked questions

Is json-server or Semaphore UI 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 Semaphore UI free and open-source?

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

Can I run json-server and Semaphore UI with Docker?

json-server: yes. Semaphore UI: yes.

Related comparisons