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The Ballerina Programming Language

Ballerina is an open source programming language and platform for cloud-era application programmers to easily write software that just works.

Providing and consuming services

It has inherently concurrent first-class language constructs for providing and consuming services.

Sequence diagrams

Sequence diagram based graphical view shows the most fundamental aspect of the semantics of a network distributed application.

Structural typing

It allows for looser coupling between distributed components and eliminates the friction of data binding.


Extensible metadata enables easy integration of Ballerina programs with cloud platforms.

Getting started

You can use one of the following options to try out Ballerina.

Downloading and installing

For instructions on downloading and installing, see Installing Ballerina.

Building from source

For prerequisites and instructions on building from source, see Installing from source.

Reporting issues and security flaws

Report an issue in the relevant repo out of the GitHub repos listed below.

Tip: If you are unsure whether you have found a bug, search existing issues in the corresponding repo on GitHub and raise it in the Ballerina-Dev Google Group.

Contributing to Ballerina

As an open source project, Ballerina welcomes contributions from the community. To start contributing, read these contribution guidelines for information on how you should go about contributing to our project.

Check the issue tracker for open issues that interest you. We look forward to receiving your contributions.


Ballerina code is distributed under Apache license 2.0.

Useful links