Mockoon

Mockoon is an open-source tool designed to quickly create and run mock REST APIs locally. It eliminates the need for remote deployment or account sign-ups, providing developers an efficient method to simulate API endpoints during development.

Mockoon is the open source alternative to:

Postman

Testfully

About Mockoon

Mockoon offers an intuitive interface that allows you to design, run, and debug mock APIs in seconds. With advanced features such as dynamic templating, rules matching, multiple response modes, HTTPS support, and proxy mode, it integrates seamlessly into any API design workflow. Enjoy compatibility with OpenAPI, CLI, Docker, serverless environments, and even cloud deployments via Mockoon Cloud for real-time collaboration.

Key Features

Open-source and free to use
Rapid creation and testing of mock APIs
Dynamic templating and rule matching for realistic scenarios
Supports HTTPS, proxy mode, and multiple responses per route
CLI and Docker support for self-hosted deployments
Cloud deployment with real-time collaboration
Privacy-friendly and offline-first design

Pricing

Solo Plan

$15/Monthly

7-day free trial included

Features:

✓Deploy 1 API mock in the cloud
✓50,000 monthly calls
✓Synchronize 5 API mocks across devices
✓100 AI-generated endpoints per month

Team Plan

$25/Monthly per seat

7-day free trial included

Features:

✓Deploy up to 3 API mocks in the cloud
✓100,000 monthly calls
✓Real-time collaboration on 10 API mocks
✓200 AI-generated endpoints per month per user

Enterprise Plan

Custom

Features:

✓All Team Plan features
✓Custom quotas and limits
✓Dedicated instances
✓Enterprise support and onboarding assistance
✓Custom payment options

Representation of core functionalities

Rendering mind map...

mindmap Mockoon Desktop Application Main Process Server Management packages/app/src/main/libs/server-management.ts Window Management packages/app/src/main/libs/main-window.ts IPC Communication packages/app/src/main/libs/ipc.ts Settings Management packages/app/src/main/libs/settings.ts Authentication packages/app/src/main/libs/auth.ts Renderer Process UI Components packages/app/src/renderer/app/components Environment Management packages/app/src/renderer/app/services/environments.service.ts Route Management packages/app/src/renderer/app/components/environment-routes Data Storage packages/app/src/renderer/app/services/storage.service.ts CLI Package Command Handlers packages/cli/src/commands Docker Support packages/cli/src/commands/dockerize.ts Import/Export packages/cli/src/commands/import.ts packages/cli/src/commands/export.ts Commons Server API Mocking Engine packages/commons-server/src/libs/server/server.ts Template Processing packages/commons-server/src/libs/template-parser.ts WebSocket Support packages/commons-server/src/libs/server/ws.ts Admin API packages/commons-server/src/libs/server/admin-api.ts Cloud Integration Sync Management packages/cloud/src/libs/sync-updates.ts Team Collaboration packages/cloud/src/models/team.model.ts User Management packages/cloud/src/models/user.model.ts Serverless Package Cloud Function Adapters packages/serverless/src/libs/serverless.ts Shared Components Models packages/commons/src/models Constants packages/commons/src/constants Utilities packages/commons/src/utils

This is the mind map that represents the core functionality of the application. It focuses on the key features and functionalities of the application and provides a visual representation of how they are interrelated.

Summary

Mockoon delivers a powerful and flexible solution for API simulation with exceptional ease-of-use and integration capabilities. Its comprehensive features, cross-environment support, and scalable cloud options empower developers to accelerate API prototyping, testing, and collaboration.

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