The Scratch compiler

Oisthebestletter

The Scratch compiler can turn many programming languages into goboscript, which can then be turned into Scratch blocks.

It currently supports Java, Kotlin, Scala, Groovy, and C#.

Get it here. All you need is a compatible shell, Git, and a stable Rust toolchain to install it:

cd /tmp
git clone "https://git.hermits.cc/playforge-coding/scratch-compiler.git"
cd scratch-compiler
cargo install --path crates/cli
scratch-compiler --version

A JRE, a compiler of your choice, and goboscript installed to use it for Java:

jscratch build examples/jvm/Hello.java --sb3 Hello.sb3

And a .NET toolchain to use it with C#:

jscratch build examples/cil/Hello.cs --sb3 Hello.sb3

Licensed under the GPL 3.0.

Last edited by Oisthebestletter (Aug. 21, 2026 16:06:53)

Oisthebestletter

bump

redspacecat

Possibly shouldn't call your compiler the Scratch compiler, as it makes it sound official when it isn't.

Oisthebestletter

redspacecat wrote:
Possibly shouldn't call your compiler the Scratch compiler, as it makes it sound official when it isn't.

Yeah.. I didn't have a good idea for the name. Suggestions are open!

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