Mockoon

Mockoon is the easiest and quickest way to design and run mock APIs. No remote deployment, no account required, free and open-source.

It combines a desktop application to design and run mock servers locally, and a CLI (https://mockoon.com/cli/) to self-host your fake APIs. A cloud (https://mockoon.com/cloud/) is also available to collaborate with your team, keep your data in sync, and deploy your mock APIs.

Mockoon offers many features:

- Unlimited number of mock local servers and routes
- CLI to run your mock in headless environments, CI, etc.
- Complete control on routes definition: HTTP methods and statuses, regex paths, file serving, custom headers, etc.
- OpenAPI compatibility
- Record/logs of all entering and forwarded requests
- JSON templating
- Proxy forwarding mode
- HTTPS support

You can check the complete list on the website: https://mockoon.com/features/