Mimicry.rest
Beeceptor
MockServer
Mockoon
Mocky
Fakend
MockThis
Vim Python IDE
Mimicry is a mock API engine designed for developers who want to build and test frontends without waiting on the backend. It lets you create dynamic CRUD resources, seed data manually through POST requests or by importing JSON, and generate realistic API responses in seconds. Its standout feature is Chaos Mode, which simulates real-world API instability by introducing latency spikes, failures, and unpredictable behavior such as 404 and 500 errors. This makes it especially valuable for teams that want to stress-test UI resilience, improve error handling, and validate user flows under realistic conditions.
Mimicry.rest
Vim Python IDENo features have been listed yet.
Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.
MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
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.
Mocky - A window into your team's Dropbox activity and projects
Fakend - Product demo data without backend changes. Mock API made easy.
MockThis - Generate mock data using AI