Cats has been made a much better project, and is a much more enjoyable project to work on because of many of the other projects on which Cats is built. Many of these projects have had enhancements made in order to benefit Cats, for which we are grateful.

We would like to thank the maintainers of these supporting projects, and we'd encourage you to check out these projects and consider integrating them into your own projects.

There are other libraries that aim to foster Functional Programming in the Scala programming language which Cats has a relationship to:

For a full list of Cats and Typelevel related projects and libraries, take a look at The Typelevel Ecosystem