Best API Mocking Tools on GitHub (2026)

Q: What is the best api mocking tools on GitHub?

Based on the RepoRadar scoring engine, mock-server/mockserver-monorepo is currently the top-ranked api mocking tools with 4.9k stars and a score of 88/100.

Q: When was this api mocking tools list last updated?

This list was last updated on 2026-06-19. Data is sourced directly from GitHub's public API.

This list contains the top 12 api mocking tools on GitHub, ranked by the RepoRadar scoring engine across five quality dimensions. The top-ranked repo is mock-server/mockserver-monorepo with 4.9k stars. Projects span written in Java, TypeScript, JavaScript, Go. Data last updated 2026-06-19.

Updated 2026-06-19 · 12 repos · Data: GitHub public API

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MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSo…

★4.9k ⑂ 1,110 ⚠ 1 Java updated 15 hours ago

aichaos-engineeringgrunt-pluginhomebrew

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

★8.3k ⑂ 461 ⚠ 52 TypeScript updated 19 hours ago

apiapplicationdesktopelectron

Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

★5k ⑂ 408 ⚠ 138 TypeScript updated 2 days ago

api-testingclihacktoberfesthttp-proxy

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Get a full fake REST API with zero coding in less than 30 seconds (seriously)

★75.6k ⑂ 7,266 ⚠ 717 JavaScript updated 2 months ago

apifakefrontendjson

stripe-mock is a mock HTTP server that responds like the real Stripe API. It can be used instead of Stripe's testmode to make test suites integrating with Stripe faster and less b…

★1.6k ⑂ 132 ⚠ 6 Go updated 21 days ago

mocker-api that creates mocks for REST APIs. It will be helpful when you try to test your application without the actual REST API server.

★502 ⑂ 63 ⚠ 26 TypeScript updated 1 month ago

mock-datamock-servermockjsmockup

Smocker is a simple and efficient HTTP mock server and proxy

★1.3k ⑂ 70 ⚠ 40 TypeScript updated 3 months ago

apifunctional-testinggointegration-testing

反中共政治宣传库。Anti Chinese government propaganda. 住在中国真名用户的网友请别给星星，不然你要被警察请喝茶。常见问答集，新闻集和饭店和音乐建议。卐习万岁卐。冠状病毒审查郝海东新疆改造中心六四事件法轮功 996.ICU709大抓捕巴拿马文件邓家贵低端人口西藏骚乱。Friends who live in China and…

★3.1k ⑂ 293 ⚠ 840 HTML updated 4 months ago

996censorshipcensorship-circumventionchina

这里是GitHub的草场，也是戈戈圈爱好者的交流地，主要讨论动漫、游戏、科技、人文、生活等所有话题，欢迎各位小伙伴们在此讨论趣事。This is GitHub grassland, and the community place for Gege circle lovers, mainly discusses anime, games, technolog…

★1.9k ⑂ 151 ⚠ 919 updated 8 months ago

a-soulacfunbilibilichina

Lightweight, blazing fast, cross-platform OpenAPI 3 mock server with validation

★720 ⑂ 70 ⚠ 31 Go updated 3 years ago

docker-imageexampleshacktoberfestmock-server

DeepfakeHTTP is a web server that uses HTTP dumps as a source for responses.

★527 ⑂ 47 ⚠ 8 Java updated 3 years ago

apidemodummydump

Creates a mock server based on an API Blueprint

★497 ⑂ 58 ⚠ 22 HTML updated 8 years ago

Frequently Asked Questions

What is the best api mocking tools on GitHub?

Based on the RepoRadar scoring engine, mock-server/mockserver-monorepo is currently the top-ranked option with 4.9k stars and a score of 88/100.

How are api mocking tools repositories ranked?

Repositories are ranked by the RepoRadar score — a composite of five dimensions: Popularity (35%), Freshness (25%), Maintenance (20%), Community (10%), and Completeness (10%). Scores range from 0–100.

When was this list last updated?

This list was last updated on 2026-06-19. Data is sourced directly from GitHub's public API. No cached or fabricated repositories are used.

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