Reqres vs Pact: What are the differences?

Reqres: Test your front-end against a real API. A hosted REST-API ready to respond to your AJAX requests; Pact: Fast, easy and reliable testing for your APIs and microservices during development. It is a code-first tool for testing HTTP and message integrations using contract tests. Contract tests assert that inter-application messages conform to a shared understanding that is documented in a contract. Without contract testing, the only way to ensure that applications will work correctly together is by using expensive and brittle integration tests.

Reqres and Pact are primarily classified as "API" and "Microservices" tools respectively.

Some of the features offered by Reqres are:

• Reqres does not store any of your data at all
• Fake data
• Real responses

On the other hand, Pact provides the following key features:

• Support for JavaScript, JVM, .NET, Python, Go, Ruby, PHP, Swift and more
• Get fast, reliable feedback on the compatibility of your integrations
• Ensures all your services are compatible with each other before you deploy

Pact is an open source tool with 196 GitHub stars and 93 GitHub forks. Here's a link to Pact's open source repository on GitHub.