Dev tools · alternatives · 2026

24 alternatives to onmock.dev

free api mock tool

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. onmock.dev launched in 2023; newer entries below may have overtaken it.

1
Onlook for Web▲574
The open-source, local-first Figma for React apps
2025 · onlook.com · its alternatives →
2
NinjaMock▲81
The faster, better and funnier way of making mockups
2016 · ninjamock.com · its alternatives →
3
Mock Maker▲93
Effortless mock APIs for seamless testing & prototyping
2024 · its alternatives →
4
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 This fragmented approach leads to outdated API specs and chaotic collaboration.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 →
5MO
Mockit – Open-source app to create and configure HTTP mocked endpoints▲158
2019 · mockit.netlify.com · its alternatives →
6
EazyMock▲4
Making API easier than you would expect
2023 · eazymock.net · its alternatives →
7
ezyMock▲81
Mocking API endpoints has never been easier
2017 · its alternatives →
8MS
Mocktastic – Simple, Offline mock REST APIs for your entire team▲43
2018 · mocktastic.com · its alternatives →
9
Postkit 2.0▲129
Codepen for mock APIs
2019 · its alternatives →
10
quickMockup▲184
Simple drag and drop mockups
2016 · jdittrich.github.io · its alternatives →
11
apimock-rs▲9
A developer-friendly, fast and functional HTTP(S) server.
Nov 2025 · apimokka.github.io · its alternatives →
12
MockingBot▲82
A rapid prototyping, design collaboration and handoff tool
2018 · its alternatives →
13
Pocket-Mocker▲5
Browser-native visual API mocking tool for frontend devs.
Dec 2025 · github.com · its alternatives →
14
Mocktotype▲149
A simple tool to display your mockups in a browser
2015 · its alternatives →
15CT
Couldn't sleep; added 960gs support to jMockups▲75
2010 · jmockups.com · its alternatives →
16
Rapidmock▲4
Generate a mock API in seconds.
2022 · its alternatives →
17
Automock – Open-Source Project for Simpler Unit Testing in TypeScript▲11
A unit testing framework for TypeScript backends working with inversion of control and dependency injection - suites-dev/suites
2023 · github.com · its alternatives →
18
EazyMock▲9
Mock APIs for your projects
2024 · eazymock.net · its alternatives →
19
Mock Studio▲3
Hi HN, I built this after using Requestly, Mokku, Mockiato, Tweak, and Mockoon. Each one either paywalled the features I actually needed, required a separate server running on my machine, or just didn't fit the way I work. The browser is already open. DevTools is already open. I wanted the mocking to live there too, not in a separate app I have to remember to start. So roughly a month ago, I started building my own tools. It intercepts network requests at the browser level and lets you swap the response, status code, headers, body without touching your code or spinning up anything.…
Feb 2026 · mockstudio.app · its alternatives →
20
DataMock▲8
Generate free realistic mock data instantly for testing.
Nov 2025 · its alternatives →
21RG
Rapidmock – Generate a mock API in seconds▲7
2022 · rapidmock.com · its alternatives →
22
Automock.app▲6
Api first platform for mockup generation
2025 · its alternatives →
23
MockAnAPI▲21
Your gateway to seamless API mocking and robust development
2023 · angkajuditogelresmi.com · its alternatives →
24
DevApiService▲6
Mock or fake API services
2024 · its alternatives →

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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 →