Celerforge

What it does

AI-powered mock API creation at lightning speed. Free RESTful API simulator, JSON server, and testing environment. Accelerate development with instant fake data generation.

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  Mock API Generator2021 · retool.com · ▲555

  Generate custom data & API to build apps in less than 30s

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  Sparrow2025 · sparrowapp.dev · ▲456

  The lightest and fastest platform for API testing

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  Refraction2023 · refraction.dev · ▲156

  Generate unit tests, create docs and refactor code using AI.

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  APIEval-20May 2026 · resources.kusho.ai · ▲121

  An open benchmark for AI agents that test APIs

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  Mocknica - AI-Powered Mock API ServerDec 2025 · mocknica.dev · ▲8

  Create mock APIs in seconds with AI. Ship prototypes faster.

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  AI-Powered Mock API Generator2023 · ▲86

  Generate customized, realistic mock data & APIs, via GPT

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  /dev/null▲490

  a social network for devs

  Dev tools · 4d 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 · 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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  Run full iOS 16.5 firmware on Android Devices▲393

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

  Dev tools · 16h 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 · 21d 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