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Alternatives

Products that do what MockFile.net does

Instant File Mock API. Custom Headers. Zero Signup

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

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  2. 2

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

    Feb 2026 · mockapi.dog

  3. 3MO
  4. 4

    Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out. Mocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required. You can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time. With v4, I also added MCP support, so coding…

    23d ago · getmocktail.com

  5. 5HM
  6. 6

    Mock your entire API in minutes.

    2019

  7. 7
    Mockoon89

    Mock servers in seconds

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  8. 8

    A HTTP-based API simulator to assist parallel development 🛠️

    2018

  9. 9
    Mockable114

    For rapid API prototyping: create REST/SOAP mocks in 3 sec

    2015

  10. 10FA

    Cmon... I just want to upload a file and make it public on the internet. Now you tell me I need to master bucket policies, ACL, CORS, multipart uploads, content headers, CDN, presigned URLs, and a bunch of other crap? I can't be asked, so I built FILE0. It's for storing files but you don't need to complete an online course.

    2024 · file0.dev

  11. 11

    Free online api mocking tool | mock api generator

    2025

  12. 12AF

    This is a side project of mine. Use this as your SMTP server in a test environment to guarantee that your users don't receive test emails. Looking for feedback, especially on the security side.

    2024 · fakemail.stream

  13. 13IA

    Hey there HN! I just wrapped up an all-day documentation spree for Instant API, a JavaScript framework for easily building web APIs that implements type safety at the HTTP interface. It uses a function-as-a-service approach combined with a slightly modified JSDoc spec to automatically enforce parameter and schema validation before HTTP requests make it through to your code. You just write comments above your endpoint functions and voila, enforced type safety contracts between your API endpoints and your developers. OpenAPI specifications are generated automatically as a byproduct of simply…

    2023 · github.com

  14. 14

    Instant Mock APIs from OpenAPI Specs

    Mar 2026 · mockline.xyz

  15. 15

    Effortless mock APIs for seamless testing & prototyping

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  16. 16OM

    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…

    2025 · beeceptor.com

  17. 17MM
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    JSON url119

    Mock backend with JSON generated from URL

    2022

  19. 19

    Simple, no code, mock APIs

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    Free mock api generator for developers | instant test data

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  21. 21
    Decoy99

    Local server mocks in macOS, all in a lightweight native app

    Mar 2026 · decoy-app.com

  22. 22

    Stateless API mocks in seconds, powered by tokens.

    Sep 2025

  23. 23

    A developer-friendly, fast and functional HTTP(S) server.

    Nov 2025

  24. 24GZ

    I made an API mocking tool that imports a schema, populates fake data, then runs a local server. This is helpful for testing APIs or advanced prototyping. A demo video is here: https://www.loom.com/share/abad2cdf325e4e0b9addea1e14406166?... There’s two fun things about this tool 1. the complete lack of configs and schema annotations. i.e. you don’t need to learn faker-js. You just need your existing GraphQL schema and to to swap out the server URL in your frontend code. 2. the depth. Your fake objects have relationships to other fake objects. And in proxy mode, real…

    2023 · github.com

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