MockAPI

What it does

MockAPI streamlines development with dynamic, realistic mocks, seamless integration, effortless testing, and randomized error responses to mimic real-world unpredictability. Build faster, test smarter! Keep your endpoints, change your response.

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  MockAPI2024 · ▲4

  Instant API Mocking for Faster Development

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  Mockadillo2019 · mockadillo.com · ▲115

  Mock your entire API in minutes.

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  InterimAPI2022 · interimapi.com · ▲68

  Custom API endpoints with realistic fake data in seconds

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  MocklifyJul 2026 · mocklify.dev · ▲3

  Mock APIs that behave like real systems

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  MockAPI2021 · mockapi.io · ▲4

  APIs on the fly

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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▲491

  a social network for devs

  Dev tools · 4d ago · dev-null.sh

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  Run full iOS 16.5 firmware on Android Devices▲459

  Contribute to oosexgang/hackios-xnu-kernel development by creating an account on GitHub.

  Dev tools · 21h ago · github.com

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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 · 29d 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 · 27d ago · github.com

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  OpenBot▲362

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

  Dev tools · 24d 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 · 22d ago · talanoa.email

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  Wordware▲9,848

  Your tool for building AI agents with natural language

  AI · 2024 · wordware.ai

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  If YouTube had actual channels▲2,741

  If Youtube had actual channels.

  Life & fun · 2024 · ytch.xyz

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  Me.bot▲1,627

  The inspiring companion for your life

  AI · 2024 · me.bot

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  Upmetrics AI▲1,197

  Business plan & financial forecast using AI

  Work · 2024 · upmetrics.co

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  Jupitrr AI▲1,195

  Jupitrr AI turns raw talking videos into scroll-stopping content for coaches and consultants. Research, script, record, edit, and publish in one app.

  AI · 2024 · jupitrr.com

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  InstantDB – A Modern Firebase▲1,145

  Hey there HN! We’re Joe and Stopa, and today we’re open sourcing InstantDB, a client-side database that makes it easy to build real-time and collaborative apps like Notion and Figma. Building modern apps these days involves a lot of schleps. For a basic CRUD app you need to spin up servers, wire up endpoints, integrate auth, add permissions, and then marshal data from the backend to the frontend and back again. If you want to deliver a buttery smooth user experience, you’ll need to add optimistic updates and rollbacks. We do these steps over and over for every feature we build, which can…

  Dev tools · 2024 · github.com