Dev tools · alternatives · 2026

24 alternatives to Wannabe – A versatile Go tool for generating mock HTTP APIs

Hey HN! Half a year ago, I decided to learn the basics of Go and create something useful along the way. Thus, I created Wannabe, a tool that's useful for generating mock HTTP APIs used in integration and all the other kinds of testing. How it works? Wannabe functions as a standalone server. Upon receiving a request, it generates a cURL command from it based on the request matching configuration you set and generates a hash from the prepared cURL command. When in "proxy" or "mixed" mode, Wannabe proxies the request to the external provider and stores the request/response pair as a record…

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Wannabe – A versatile Go tool for generating mock HTTP APIs launched in 2024; newer entries below may have overtaken it.

1. 1
   HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup▲341

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

   2019 · httptoolkit.tech · its alternatives →

2. 2
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

3. 3
   Apidog▲570

   Development teams often struggle with using multiple tools like Postman and Swagger for API design, development, and testing. This fragmented approach leads to outdated API specs and chaotic collaboration. So we built Apidog: a single, unified API platform for team collaboration. It has a beautiful interface that makes it easy to create API spec, generate request data from API spec, validate responses, create mock data, orchestrate test scenarios, and publish API documentation. Apidog = Postman + Swagger + Mock + JMeter.

   2024 · apidog.com · its alternatives →

4. 4
   Pollux▲82

   Fake json data & json server mock API generator with JWT

   2021 · mohammedal-rowad.github.io · its alternatives →

5. 5
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

6. 6
   Hurl – Run and test HTTP requests with plain text, curl and Rust▲223

   Hurl, run and test HTTP requests with plain text and curl. Hurl can run fast automated integration tests.

   2021 · hurl.dev · its alternatives →

7. 7MO
   Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

   2019 · mockit.netlify.com · its alternatives →

8. 8
   Mockoon – mock REST APIs in seconds▲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.

   2017 · mockoon.com · its alternatives →

9. 9AS
   A Swiss army knife for testing HTTP from the terminal▲110

   Hiya HN! Just released Artillery Probe - a Swiss army knife for testing HTTP from the CLI. Think mini-curl with better UX for common use-cases, plus a couple of extra features. Would love for you to try it and give some feedback! https://www.artillery.io/blog/swiss-army-knife-for-http-testing and: npm install artillery@latest What does it do? - First of all, it's a HTTP client! It does all the usual stuff you'd expect from a HTTP client... HTTP methods, request bodies, custom headers, forms, Basic Auth etc. - Got some JSON or XML back? It'll pretty-print it, and syntax…

   2022 · its alternatives →

10. 10
    JSON url▲119

    Mock backend with JSON generated from URL

    2022 · jsonurl.com · its alternatives →

11. 11
    Mocktail – Free, open-source mock API server with a built-in dashboard▲25

    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…

    Aug 2026 · getmocktail.com · its alternatives →

12. 12
    Uncurl.dev – Convert curl commands to a shareable, executable UI▲115

    Hey HN, I built uncurl.dev to scratch my own itch: I kept getting curl commands in API docs, bug reports, or Slack messages and wanted a quick way to visualize, run, and debug them without firing up Postman or writing code to dissect them. It was also sometimes painful to create a test page specifically for non-tech users to consume an API. I originally vibe-coded this over a weekend just to make it easier for myself to debug API requests shared as curl commands. It slowly grew into something I found surprisingly useful in my workflow, so I decided to clean it up and share it. uncurl.dev…

    2025 · uncurl.dev · its alternatives →

13. 13
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

14. 14
    Fetchbook – Run and test your HTTP requests 100% locally▲59

    Run and test your HTTP requests. Git friendly, 100% local. - 4lejandrito/fetchbook

    2023 · github.com · its alternatives →

15. 15
    Inspect-HTTP-Proxy: a tool to pretty-print JSON requests/responses▲8

    A simple Go-based HTTP proxy designed for detailed inspection of requests and responses. It logs traffic to the console with colorization, automatic decompression, and formatting for common content types, while remaining transparent to the client application. Ideal for debugging API interactions, understanding middleware behavior, or simply getting a clear view of HTTP traffic flow with jq-like pretty-printing & colorization of request/response. Automatically redacts parts of Authorization header to avoid token leakage.

    2025 · github.com · its alternatives →

16. 16
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

17. 17CM
    Creating mock data using TypeScript interfaces▲57

    2023 · butlermock.online · its alternatives →

18. 18MS
    Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

    2018 · mocktastic.com · its alternatives →

19. 19
    We’re open-sourcing Requestly - HTTP debugging proxy for Web and Mobile▲54

    Hey HN! We’ve open-sourced Requestly (https://github.com/requestly/requestly) - A network debugging proxy for web & mobile apps. Requestly intercepts all HTTP(s) requests & responses and provides full control to developers to modify the request/response like rewriting request URL to hit different environment or returning different response for APIs/scripts. In addition to HTTP(s) interception & modification capabilities, Requestly also offers Mock Server [0] & recording the browser sessions [1] with video, console logs, & network logs stitched together. We use…

    2023 · github.com · its alternatives →

20. 20QG
    Quickly generate REST API (for Postgres db)▲70

    2019 · its alternatives →

21. 21
    RequestHub – Receive, Log, and Proxy HTTP Requests▲17

    Receive, Log, and Proxy HTTP requests. Contribute to kyledayton/requesthub development by creating an account on GitHub.

    2015 · github.com · its alternatives →

22. 22
    FakeURL▲6

    Free online api mocking tool | mock api generator

    2025 · fakeurl.dev · its alternatives →

23. 23
    Mocknica - AI-Powered Mock API Server▲8

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

    Dec 2025 · mocknica.dev · its alternatives →

24. 24
    Mock API Generator▲17

    API Mocks Prototyping

    2020 · mock-api-builder.vercel.app · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →