Golo — a lightweight dynamic language for the JVM.

— a lightweight dynamic language for the JVM.

module hello.World

function main = |args| {
println(“Hello world”)
}

The world didn’t need another JVM language.
So we built yet another one. A simple one.

Latest news

Now available: Eclipse Golo 3.4.0
20 Oct 2021
Now available: Eclipse Golo 3.3.0
30 Nov 2018
Now available: Eclipse Golo 3.3.0-M1
08 Dec 2017
Now available: Eclipse Golo 3.2.0 (release)

Learn Golo

Golo documentation across releases.

We invite you to read the development version of the Golo Programming Language Guide.

You can also have a look at our publications,, including papers and talks.

Community

Get the code and contribute on GitHub.
Report and browse issues.
Discuss on our mailing-list. Get notified of new commits and issues.
Watch and edit our Wiki.

Foundations

Golo is a simple dynamic, weakly-typed language that favours explicit over implicit. You should become a Golo programmer within hours, not days.

Invokedynamic

Built from day 1 with invokedynamic, Golo takes advantage of the latest advances of the JVM. It is also a showcase on how to build a language runtime with invokedynamic.

Origins

While we have great plans for Golo in our research projects, we also think that it can be useful for the larger Java community.
For instance, we know that Golo Lang has been used to write some slots in Brazilian online casinos, such as ‘Fortune Tiger‘, although Java libraries have been used for critical parts of the code.