Top 12 Open-Source Alternatives to MockAPI

MockAPI

MockAPI lets users mock up APIs, generate custom data, and perform operations on it using RESTful interface.

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Product categories

API API Clients API Design API Gateway API Management API Testing API Tools APIs Api Analytics Developer Tools HTTP Proxies Web Service Automation

Summary

The top open-source alternatives to MockAPI are Mockoon, Postman, and Generate Data. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Mockoon Landing Page
1

Mockoon

Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.
Pricing:
- Open Source
- Paid
- Free Trial
- $15.0 / Monthly (5 API mocks synchronized accross your devices, 1 mock deployed)
#API Tools #Developer Tools #APIs 35 social mentions
Postman Landing Page
2

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 social mentions
Generate Data Landing Page
3

Generate Data

GenerateData.com: free, GNU-licensed, random custom data generator for testing software
Pricing:
- Open Source
#Testing #Developer Tools #Fake Data Generator 14 social mentions
WireMock Landing Page
4

WireMock

WireMock - a web service test double for all occasions.
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 23 social mentions
StopLight Landing Page
5

StopLight

Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience.
Pricing:
- Open Source
- Freemium
- Free Trial
#API #API Tools #API Management 33 social mentions
MockServer Landing Page
6

MockServer

Easy mocking of any system you integrate with via HTTP or HTTPS.
Pricing:
- Open Source
#API #API Tools #Developer Tools 4 social mentions
Django REST framework Landing Page
7

Django REST framework

Django REST framework is a toolkit for building web APIs.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 3 social mentions
Gravitee.io Landing Page
8

Gravitee.io

Gravitee.io is a flexible, lightweight and an open source API management solution.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #Monitoring Tools #API Management 4 social mentions
Insomnia REST Landing Page
9

Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
Pricing:
- Open Source
#API #API Tools #Developer Tools 134 social mentions
Tyk Landing Page
10

Tyk

Tyk is an open-source API gateway and API management platform.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 14 social mentions
Google Cloud Endpoints Landing Page
11

Google Cloud Endpoints

Google Cloud Endpoints provides the tools to develop, deploy, protect and monitor your APIs.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 4 social mentions
Mocko.dev Landing Page
12

Mocko.dev

Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integrations tests.
Pricing:
- Open Source
- Free
#API Tools #Developer Tools #APIs 2 social mentions