Dev tools · alternatives · 2026
24 alternatives to MockAPI
Lightweight Local API Mock Server One binary Full-featured.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
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 →
- 2
Generate custom data & API to build apps in less than 30s
2021 · retool.com · its alternatives →
- 3
Develop APIs fast + automatically detect endpoints
2025 · fastrequest.apidog.com · its alternatives →
- 4
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 · its alternatives →
- 5MO
2019 · mockit.netlify.com · its alternatives →
- 6
Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.
2019 · httptoolkit.tech · its alternatives →
- 7
Progressive Web App for generating mocked data from an OpenAPI specification - Fredx87/openapi-mock-generator
2020 · github.com · its alternatives →
- 8
Prism▲79Accelerate API development with realistic mock servers
2023 · stoplight.io · its alternatives →
- 9
- 10MS
2018 · mocktastic.com · its alternatives →
- 11
- 12
Hi, this is Mish and Sebastian. We are working on Step CI - a fully automated API testing platform for developers. Step CI works programming-language independent and for different API paradigms (REST, GraphQL, XML). Our CLI and test runner are available on GitHub (https://github.com/stepci) under the MPLv2 license. Since our last launch, Step CI is now able to generate automated tests for your API based on your OpenAPI (Swagger) spec. This saves you a lot of time as you never have to write and maintain your tests again! We would like to invite you to try our tool and give us…
2022 · stepci.com · its alternatives →
- 13
- 14
A generator for OpenAPI 3. Contribute to egorsmkv/openapi3-generator development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 15
MockAPI Dog▲122Instant mock REST & LLM APIs - free, no signup required
Feb 2026 · mockapi.dog · its alternatives →
- 16
Hey HN! We've developed OpenAPI AutoSpec, a tool for automatically generating OpenAPI specifications from localhost network traffic. It’s designed to simplify the creation of API documentation by just using your website or service, especially useful when you're pressed for time. Documenting endpoints one by one sucks. This project originated from us needing it at our past jobs when building 3rd-party integrations. It acts as a local server proxy that listens to your application’s HTTP traffic and automatically translates this into OpenAPI 3.0 specs, documenting endpoints, requests, and…
2024 · github.com · its alternatives →
- 17
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 →
- 18
- 19
Mocklets▲82A HTTP-based API simulator to assist parallel development 🛠️
2018 · mocklets.com · its alternatives →
- 20
Free online tool to test APIs and autogenerate documentation
2018 · swagger.io · its alternatives →
- 21
- 22
MockAPI▲5Accelerate Your Development with Realistic Mock APIs
2024 · mockapi.com · its alternatives →
- 23
Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀 - apideck-libraries/portman
2021 · github.com · its alternatives →
- 24TA
An OpenAPI alternative to describe REST APIs for type-safe code generation.
2023 · typeapi.org · its alternatives →
Also compare
- Mockoon – mock REST APIs in seconds alternatives
- Mock API Generator alternatives
- Apidog Fast Request alternatives
- OpenAPI mocks that don't suck – realistic test data, quick setup alternatives
- Mockit – Open-source app to create and configure HTTP mocked endpoints alternatives
- HTTP Mock – Intercept, debug and mock HTTP(S) with zero setup 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 →