Mockoon

The product is a tool for designing and running mock REST APIs locally to enable frontend development, integration testing and API prototyping without a live backend or remote deployment. It is for software developers and engineering teams in organizations of all sizes who need to simulate APIs. It is delivered as an offline-first, open-source desktop application with a CLI, Docker image and optional cloud deployment, requiring no account.

Key features

• Unlimited mock APIs and routes
• CLI for headless and CI environments
• OpenAPI import and export
• Route regex support
• Multiple responses per route
• Automatic CORS headers
• HTTPS with custom TLS certificate
• Custom response headers
• Simulated latency per environment or route
• Stateful CRUD on JSON databases
• Callbacks and webhooks support
• Serverless deployment compatibility
• Dynamic templating
• Rules matching system
• Proxy mode and request recording
• Real-time cloud collaboration
• Cloud deployment and synchronization