Hoverfly

As any independent developer will tell you, API testing is an incredibly complex and dynamic process. Fortunately, it can be simplified to a great extent with the help of specialized tools such as Hoverfly.

Hoverfly is cross-platform, powerful command line-based piece of software that provides you with a straightforward way to create simulations for app APIs that can also be edited, exported, and shared.

It can be run from the command line on all major operating systems out there, namely Windows, macOS, and Linux.

The tool is perfectly capable or replacing changing API dependencies with sustainable and renewable, all while accounting for random failures and network latency.

Also noteworthy is the fact that Hoverfly can be used both as a proxy server and as a webserver while providing you with four modes, namely Capture, Simulate, Synthesize and Modify.

Hoverfly comes with support for both x86 and x64 architectures, and it is comprised out of two binaries: hoverfly.exe and hoverctl.exe. The first one provides the proxy servers and API endpoints while the latter is an actual CLI that helps you start, configure, and stop Hoverfly.

Start off by extracting the contents of the provided package on any location on your computer's hard drive. It's worth keeping in mind that both hoverfly.exe and hoverctl.exe should be located in the same folder

Use the "--help" command to get a full description of all the available commands or feel free to read more on the utility's official documentation page.

To sum it all up, Hoverfly is a capable service virtualization and API simulation tool that allows you to capture HTTP traffic and create virtual interactions, as well as manage requests and responses. It can be run on all the key platforms out there without requiring distinctive dependencies or integrations and, best of all, without draining your computer's resources.