What are the best API mocking services?

Mockoon is the easiest and quickest way to run mock API locally. No remote deployment, no account required, open source. - Unlimited mocking: Create an unlimited number of mock API with unlimited number of routes and run them in parallel. - Import / export: Mock API import / export with Swagger/OpenAPI format support. - Route regex: Route regex supported (/.*, /[a-z]{3}, ...), based on ExpressJS syntax. - Multiple responses per route: Serve multiple rules-triggered responses for each route with any headers body, or HTTP status codes. - CORS: Automatically send CORS headers (Access-Control-Allow-Origin, etc.) for OPTIONS requests. - HTTPS: Serve your mock API over TLS with self-signed certificate. - Response headers: Add any response headers to your routes and mock API. With auto-completion. - Latency: Add latency at environment or route level or even both. - Requests and responses logs: All incoming requests and outgoing responses are logged for easier debugging. - Proxy mode: Redirect all non-defined routes to the specified host with Mockoon's proxy mode. - File serving: File serving with automatic mime type detection and templating support. - Rich text editor: Rich text editor for body content supporting multiple languages (JSON, HTML, etc). - Templating: Templating supported in body, file content and header, with many helpers: url params, query params, JSON body lookup, etc. - Auto-save: Real-time auto save as you type. Never worry again about saving! - Offline: No account, no sign-up, no cloud deployment required.