Implementations

Build Servers

Build tool	Link	Implementation language	Notes
Bazel	bazel-bsp	Kotlin	Supports Java, Scala, and Kotlin.
Bloop	scalacenter/bloop	Scala	Supports sbt, Gradle, Maven and Mill.
Mill	mill	Scala	Built-in since mill 0.9.3, before as contrib plugin.
sbt	sbt	Scala	Since 1.4.0
scala-cli	scala-cli	Scala	Supports Scala and Java.
Cargo	cargo-bsp	Rust	(Work in progress) Supports Rust.
Gradle	build-server-for-gradle	Java	Supports Java.

Build Clients

Supporting Tool	Link	Implementation language	Notes
IntelliJ Scala	JetBrains/intellij-scala	Scala	Implementation focused on Scala, supports Java.
IntelliJ-BSP	JetBrains/intellij-bsp	Kotlin	New implementation with broader language support.
Metals	scalameta/metals	Scala	LSP language server.
scala-cli	scala-cli	Scala	Act as BSP client towards Bloop.
Gradle for Java	Microsoft/vscode-gradle	Java and TypeScript	Act as BSP client towards Build Server for Gradle.