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<!DOCTYPE html><html lang="en"> <head><meta charSet="utf-8"/><meta name="viewport" content="width=device-width"/><link rel="icon" href="/assets/favicon.ico"/><script defer="" data-domain="star-history.com" src="https://plausible.io/js/script.js"></script><meta name="next-head-count" content="4"/><link data-next-font="size-adjust" rel="preconnect" href="/" crossorigin="anonymous"/><link rel="preload" href="/_next/static/css/f94657194d4c857a.css" as="style" crossorigin=""/><link rel="stylesheet" href="/_next/static/css/f94657194d4c857a.css" crossorigin="" data-n-g=""/><noscript data-n-css=""></noscript><script defer="" crossorigin="" nomodule="" src="/_next/static/chunks/polyfills-c67a75d1b6f99dc8.js"></script><script src="/_next/static/chunks/webpack-38cee4c0e358b1a3.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/framework-fda0a023b274c574.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/main-001c9e19b1894c7d.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/pages/_app-915effad870aa62e.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/6c86d9ce-d8b7531786dd65a5.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/472-8057db644de3d496.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/590-d0a3c67c09cc0662.js" defer="" crossorigin=""></script><script src="/_next/static/chunks/pages/blog/%5Bslug%5D-7b378153203b51eb.js" defer="" crossorigin=""></script><script src="/_next/static/xKX4ZiOi_N7h3OBOEsSZu/_buildManifest.js" defer="" crossorigin=""></script><script src="/_next/static/xKX4ZiOi_N7h3OBOEsSZu/_ssgManifest.js" defer="" crossorigin=""></script></head><body><div id="__next"><div class="relative w-full h-auto min-h-screen overflow-auto flex flex-col"><title>Starlet #3 Mockoon - Mock your API in seconds</title><meta name="description" content="Mockoon is a versatile API mocking tool with a desktop application and a CLI. 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It is simple and easy to use, yet powerful and heavily customizable."/><meta name="twitter:image" content="https://star-history.com/assets/blog/mockoon/banner.webp"/><nav><div class="flex justify-center items-center gap-x-6 bg-green-600 px-6 py-1 sm:px-3.5 "><p class="text-sm leading-6 text-white"><a href="/blog/list-your-open-source-project">Want to promote your open source project? 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hover:underline">Issue #28 - Trench</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/langfuse"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #27 - langfuse</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/thepipe"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #26 - thepi.pe</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/taipy"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #25 - Taipy</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/superlinked"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #24 - Superlinked</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/tea-tasting"><span class="inline -ml-2 text-sm 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class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #8 - Prompt flow</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/clipboard"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #7 - Clipboard</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/hoppscotch"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #6 - Hoppscotch</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/metisfl"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #5 - MetisFL</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/chatgpt-js"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #4 - chatgpt.js</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/mockoon"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #3 - Mockoon</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/dlta-ai"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #2 - DLTA-AI</span></a></li><li class="mb-2 leading-3"><a class="cursor-pointer" rel="noopener noreferrer" href="/blog/sniffnet"><span class="inline -ml-2 text-sm text-blue-700 hover:underline">Issue #1 - Sniffnet</span></a></li></ul></div></div></div><div class="w-full flex flex-col justify-start items-center"><div class="w-full p-4 md:p-0 mt-6 md:w-5/6 lg:max-w-6xl h-full flex flex-col justify-start items-center self-center"><img class="hidden md:block w-auto max-w-full object-scale-down" src="/assets/blog/mockoon/banner.webp" alt=""/><div class="w-auto max-w-6xl mt-4 md:mt-12 prose prose-indigo prose-xl md:prose-2xl flex flex-col justify-center items-center"><h1 class="leading-16">Starlet #3 Mockoon - Mock your API in seconds</h1></div><div class="w-full mt-8 mb-2 max-w-6xl px-2 flex flex-row items-center justify-center text-sm text-gray-900 font-semibold trackingwide uppercase"><div class="flex space-x-1 text-gray-500"><span class="text-gray-900">Guillaume (255kb)</span><span aria-hidden="true"> · </span><time dateTime="2023-08-01T00:00:00.000Z">Aug 1, 2023</time><span aria-hidden="true"> · </span><span> 4 min read </span></div></div><div class="mt-8 w-full max-w-5xl prose prose-indigo prose-xl md:prose-2xl"><p><em>This is the third issue of The Starlet List. If you want to prompt your open source project on star-history.com for free, please check out our <a href="/blog/list-your-open-source-project">announcement</a>.</em></p> <hr> <h2>What is Mockoon?</h2> <p><a href="https://mockoon.com">Mockoon</a> is an open-source API tool. It allows developers to quickly create realistic mock APIs and deploy them anywhere.</p> <blockquote> <p>💡 What is API mocking? It's simulating an API to make your work easier. It is useful when the API is still under development, is not reachable (i.e. production only), or requires an account creation or token provisioning. API mocking allows developers to work with an API without dealing with all these constraints.</p> </blockquote> <p>Mockoon is a versatile API mocking tool with a desktop application and a CLI. It is simple and easy to use, yet powerful and heavily customizable. It allows developers to design their mock APIs during the development phase with the desktop application and run them in headless server/CI environments with the CLI.</p> <p>It answers most API mocking use cases, from quick prototyping or teaching to complex automation testing with rules and dynamic data.</p> <p><img src="/assets/blog/mockoon/screenshot.webp" alt="Mockoon's desktop application and CLI screenshots"></p> <h2>Why Mockoon?</h2> <p>Many tools on the market are focused on API design or API testing but not on API mocking. One consequence is that the API mocking experience is subpar, and scenarios are constrained by the tool's first purpose (designing, testing, etc.).</p> <p>Another approach of some tools is to let you write code to create API mocks. It has some undeniable advantages but lacks the flexibility of having a quick way to prototype or experiment.</p> <p>At Mockoon, we believe API mocking is one of the first needs of developers. We need it to experiment before the API contract is defined, to test complex scenarios, to run automated tests without having to deploy and maintain a test API, or to simply mock an annoying proxy at work.</p> <p>Mockoon has a "sandbox" approach where it's possible to mock anything anywhere. API mocking is a first-class citizen.</p> <p>Mockoon is also privacy-friendly and requires no account or cloud deployment.</p> <h2>Awesome features</h2> <p>Among the many features of Mockoon, here are some of the most notable ones:</p> <ul> <li>♾️ Fast and easy mocking: quickly prototype your mock APIs with our ready-to-use templates and AI assistant.</li> <li>⚙️ Fully configurable: create realistic endpoints with dynamic data, custom headers and status codes, templating, rules, regexes, latency, etc.</li> <li>🗂️ Automated CRUD endpoints: manipulate data as if you had a development database (similar to json-server).</li> <li>🧩 Partial mocking: mock only the endpoints you need and forward the rest to the actual API.</li> <li>🐋 Run your mock anywhere: use the CLI to run your mock APIs in any headless or automated environment: CI, GitHub Actions, Docker containers, etc.</li> <li>☁️ Serverless compatibility: run your mock APIs in serverless environments: AWS Lambda, GCP/Firebase Functions, etc.</li> <li>⏺️ Logging and recording: log requests and responses and record them to create mocks automatically.</li> <li>📥 Import/export: don't start from a blank canvas by importing an OpenAPI specification file.</li> </ul> <h2>A little bit of history</h2> <p>My name is <a href="https://twitter.com/255kb">Guillaume</a>, and I launched Mockoon at the end of 2017. I started working on this application because we needed an API mocking tool where I worked.</p> <p>Some alternatives already existed but felt a bit cumbersome (especially Postman mocking) and were cloud-based. Being in a regulated environment (finance), we couldn't use cloud services.</p> <p>I also wanted to create and publish a side project from scratch and see where it would take me.</p> <p>I created the MVP in 3 months and released it on Hacker News and Reddit. I had no real expectations, but the feedback was good, which motivated me to keep working on it.</p> <p>In March 2021, I quit my job to focus full-time on the project. I'm now working on a <a href="https://mockoon.com/pro/">Saas platform</a> for Mockoon, which offers complementary features around the open-source core.</p> <p>Fast forward six years, dozens of articles and tutorials written, tens of thousands of active users, and more than 400k downloads Mockoon is still there and growing!</p> <p><a href="https://star-history.com/#mockoon/mockoon&Date"><img src="https://api.star-history.com/svg?repos=mockoon/mockoon&type=Date" alt="Star History Chart"></a></p> <h2>Roadmap</h2> <p>We have a <a href="https://mockoon.com/public-roadmap/">public roadmap</a> on which we list all the features we are working on or plan to work on. We have a lot of ideas and are working hard to make them happen!</p> <p>If you want to stay up-to-date with our progress or contribute to the project (all kinds of contributions are welcome!), you can follow us on <a href="https://twitter.com/GetMockoon">Twitter</a> or join our <a href="https://discord.gg/9WmZq5U">Discord server</a>.</p> </div></div><div class="mt-12"><iframe src="https://embeds.beehiiv.com/2803dbaa-d8dd-4486-8880-4b843f3a7da6?slim=true" data-test-id="beehiiv-embed" height="52" frameBorder="0" scrolling="no" style="margin:0;border-radius:0px !important;background-color:transparent"></iframe></div></div><div class="w-full hidden lg:block"></div></div><footer class="relative w-full shrink-0 h-auto mt-6 flex flex-col justify-end items-center"><div class="w-full py-2 px-3 md:w-5/6 lg:max-w-7xl flex flex-row flex-wrap justify-between items-center text-neutral-700 border-t"><div class="text-sm leading-8 flex flex-row flex-wrap justify-start items-center"><div class="h-full 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(255kb)","featured":true,"featureImage":"/assets/blog/mockoon/banner.webp","publishedDate":"2023-08-01T00:00:00.000Z","excerpt":"Mockoon is a versatile API mocking tool with a desktop application and a CLI. It is simple and easy to use, yet powerful and heavily customizable.","readingTime":4},"parsedBlogHTML":"\u003cp\u003e\u003cem\u003eThis is the third issue of The Starlet List. If you want to prompt your open source project on star-history.com for free, please check out our \u003ca href=\"/blog/list-your-open-source-project\"\u003eannouncement\u003c/a\u003e.\u003c/em\u003e\u003c/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat is Mockoon?\u003c/h2\u003e\n\u003cp\u003e\u003ca href=\"https://mockoon.com\"\u003eMockoon\u003c/a\u003e is an open-source API tool. It allows developers to quickly create realistic mock APIs and deploy them anywhere.\u003c/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e💡 What is API mocking? It\u0026#39;s simulating an API to make your work easier. It is useful when the API is still under development, is not reachable (i.e. production only), or requires an account creation or token provisioning. API mocking allows developers to work with an API without dealing with all these constraints.\u003c/p\u003e\n\u003c/blockquote\u003e\n\u003cp\u003eMockoon is a versatile API mocking tool with a desktop application and a CLI. It is simple and easy to use, yet powerful and heavily customizable.\nIt allows developers to design their mock APIs during the development phase with the desktop application and run them in headless server/CI environments with the CLI.\u003c/p\u003e\n\u003cp\u003eIt answers most API mocking use cases, from quick prototyping or teaching to complex automation testing with rules and dynamic data.\u003c/p\u003e\n\u003cp\u003e\u003cimg src=\"/assets/blog/mockoon/screenshot.webp\" alt=\"Mockoon\u0026#39;s desktop application and CLI screenshots\"\u003e\u003c/p\u003e\n\u003ch2\u003eWhy Mockoon?\u003c/h2\u003e\n\u003cp\u003eMany tools on the market are focused on API design or API testing but not on API mocking. One consequence is that the API mocking experience is subpar, and scenarios are constrained by the tool\u0026#39;s first purpose (designing, testing, etc.).\u003c/p\u003e\n\u003cp\u003eAnother approach of some tools is to let you write code to create API mocks. It has some undeniable advantages but lacks the flexibility of having a quick way to prototype or experiment.\u003c/p\u003e\n\u003cp\u003eAt Mockoon, we believe API mocking is one of the first needs of developers. We need it to experiment before the API contract is defined, to test complex scenarios, to run automated tests without having to deploy and maintain a test API, or to simply mock an annoying proxy at work.\u003c/p\u003e\n\u003cp\u003eMockoon has a \u0026quot;sandbox\u0026quot; approach where it\u0026#39;s possible to mock anything anywhere. API mocking is a first-class citizen.\u003c/p\u003e\n\u003cp\u003eMockoon is also privacy-friendly and requires no account or cloud deployment.\u003c/p\u003e\n\u003ch2\u003eAwesome features\u003c/h2\u003e\n\u003cp\u003eAmong the many features of Mockoon, here are some of the most notable ones:\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e♾️ Fast and easy mocking: quickly prototype your mock APIs with our ready-to-use templates and AI assistant.\u003c/li\u003e\n\u003cli\u003e⚙️ Fully configurable: create realistic endpoints with dynamic data, custom headers and status codes, templating, rules, regexes, latency, etc.\u003c/li\u003e\n\u003cli\u003e🗂️ Automated CRUD endpoints: manipulate data as if you had a development database (similar to json-server).\u003c/li\u003e\n\u003cli\u003e🧩 Partial mocking: mock only the endpoints you need and forward the rest to the actual API.\u003c/li\u003e\n\u003cli\u003e🐋 Run your mock anywhere: use the CLI to run your mock APIs in any headless or automated environment: CI, GitHub Actions, Docker containers, etc.\u003c/li\u003e\n\u003cli\u003e☁️ Serverless compatibility: run your mock APIs in serverless environments: AWS Lambda, GCP/Firebase Functions, etc.\u003c/li\u003e\n\u003cli\u003e⏺️ Logging and recording: log requests and responses and record them to create mocks automatically.\u003c/li\u003e\n\u003cli\u003e📥 Import/export: don\u0026#39;t start from a blank canvas by importing an OpenAPI specification file.\u003c/li\u003e\n\u003c/ul\u003e\n\u003ch2\u003eA little bit of history\u003c/h2\u003e\n\u003cp\u003eMy name is \u003ca href=\"https://twitter.com/255kb\"\u003eGuillaume\u003c/a\u003e, and I launched Mockoon at the end of 2017. I started working on this application because we needed an API mocking tool where I worked.\u003c/p\u003e\n\u003cp\u003eSome alternatives already existed but felt a bit cumbersome (especially Postman mocking) and were cloud-based. Being in a regulated environment (finance), we couldn\u0026#39;t use cloud services.\u003c/p\u003e\n\u003cp\u003eI also wanted to create and publish a side project from scratch and see where it would take me.\u003c/p\u003e\n\u003cp\u003eI created the MVP in 3 months and released it on Hacker News and Reddit. I had no real expectations, but the feedback was good, which motivated me to keep working on it.\u003c/p\u003e\n\u003cp\u003eIn March 2021, I quit my job to focus full-time on the project. I\u0026#39;m now working on a \u003ca href=\"https://mockoon.com/pro/\"\u003eSaas platform\u003c/a\u003e for Mockoon, which offers complementary features around the open-source core.\u003c/p\u003e\n\u003cp\u003eFast forward six years, dozens of articles and tutorials written, tens of thousands of active users, and more than 400k downloads Mockoon is still there and growing!\u003c/p\u003e\n\u003cp\u003e\u003ca href=\"https://star-history.com/#mockoon/mockoon\u0026Date\"\u003e\u003cimg src=\"https://api.star-history.com/svg?repos=mockoon/mockoon\u0026type=Date\" alt=\"Star History Chart\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003ch2\u003eRoadmap\u003c/h2\u003e\n\u003cp\u003eWe have a \u003ca href=\"https://mockoon.com/public-roadmap/\"\u003epublic roadmap\u003c/a\u003e on which we list all the features we are working on or plan to work on. We have a lot of ideas and are working hard to make them happen!\u003c/p\u003e\n\u003cp\u003eIf you want to stay up-to-date with our progress or contribute to the project (all kinds of contributions are welcome!), you can follow us on \u003ca href=\"https://twitter.com/GetMockoon\"\u003eTwitter\u003c/a\u003e or join our \u003ca href=\"https://discord.gg/9WmZq5U\"\u003eDiscord server\u003c/a\u003e.\u003c/p\u003e\n"},"__N_SSG":true},"page":"/blog/[slug]","query":{"slug":"mockoon"},"buildId":"xKX4ZiOi_N7h3OBOEsSZu","isFallback":false,"gsp":true,"scriptLoader":[]}</script></body></html>