What are the top Groovy repos?

Popular Groovy repositories on GitHub, each answered in plain English for non-coders: what it is, its tech stack, and how to run it.

gradle/gradleGradle is a build automation tool that compiles code, runs tests, and packages applications. It handles large
fieldju/dependency-graph-demoA tool that reads a simple text file of component dependencies and draws them as an ASCII tree so you can see