scala-cli
Scala CLI is a command-line tool to interact with the Scala language. It lets you compile, run, test, and package your Scala code. (and more!) It shares some similarities with build tools, but it doesn't aim at supporting multi-module projects, nor to be extended via a task system.
As of SIP-46, Scala CLI has been accepted as the new scala
command and is currently in the experimental phase. If you want to try it out, check for more
details here.