QuickMocker

What it does

Create Mock API, Fake API, dummy API, stub API etc. Intercept and debug requests, forward request to localhost, import endpoints from OpenAPI (Swagger), use 100 shortcodes for response templating, use dummy API as a proxy, regexp URL path and much more.

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  HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup2019 · httptoolkit.tech · ▲341

  Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.

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  Swagger Inspector2018 · swagger.io · ▲141

  Free online tool to test APIs and autogenerate documentation

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  MockAPI DogFeb 2026 · mockapi.dog · ▲122

  Instant mock REST & LLM APIs - free, no signup required

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  Mockoon – mock REST APIs in seconds2017 · mockoon.com · ▲68

  Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.

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  MockAPI2024 · ▲4

  Instant API Mocking for Faster Development

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  OpenAPI mocks that don't suck – realistic test data, quick setup2025 · beeceptor.com · ▲13

  Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…

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  /dev/null▲489

  a social network for devs

  Dev tools · 3d ago · dev-null.sh

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  Whiteboard (YC W26) – an open-source IDE for thoughtful software design▲423

  open-source IDE for thoughtful software design. Contribute to devdotfast/whiteboard development by creating an account on GitHub.

  Dev tools · 28d ago · github.com

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  Reladraw – A diagram language where you decide where to place things▲411

  Contribute to reladraw/reladraw development by creating an account on GitHub.

  Dev tools · 26d ago · github.com

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  OpenBot▲362

  Grok Bot alternative: free, local, open-source, multiplayer

  Dev tools · 23d ago · openbot.run

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  Talanoa▲346

  Hi HN, I’m a fullstack developer, and honestly, I’ve lost count of how many side projects I’ve worked on over the years. But one idea kept coming back to me: a different kind of email client. It first came to me in 2014: “What if we could handle emails more like conversations?” Every year, I’d revisit this concept in my “Build Notes.” Ten years later, no one had built exactly what I had in mind — so I finally decided to do it myself. That’s how Talanoa was born. I wanted something focused on people, not timelines. I was tired of marking messages as unread just to remember to reply later, or…

  Dev tools · 21d ago · talanoa.email

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  CoreSpeed▲332

  One MCP for everything your agents need: apps, memory, tools

  Dev tools · 29d ago · corespeed.io

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  Admin Portal (by WorkOS)▲1,408

  Pre-built wizard for configuring Single Sign-On (SSO/SAML)

  Dev tools · 2020 · workos.com

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  Sidekick Browser▲1,050

  A productivity browser for becoming focused and unstoppable

  Work · 2020 · perplexity.ai

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  PFPMaker▲1,027

  Create an awesome profile pic from any photo

  Growth · 2020 · pfpmaker.com

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  Screenity▲878

  The most powerful screen recorder for Chrome

  Dev tools · 2020 · chromewebstore.google.com

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  Notion Timeline▲778

  Plot all your projects chronologically

  Work · 2020 · notion.so

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  I Rebuilt MySpace from 2007▲726

  SpaceHey is a retro social network focused on privacy and customizability. It

  Life & fun · 2020 · spacehey.com