Arduino IDE 2.x (beta)

Arduino IDE

This repository contains the source code of the Arduino IDE 2.x, which is currently in beta stage. If you’re looking for the stable IDE, go to the repository of the 1.x version at

The Arduino IDE 2.x is a major rewrite, sharing no code with the IDE 1.x. It is based on the Theia IDE framework and built with Electron. The backend operations such as compilation and uploading are offloaded to an arduino-cli instance running in daemon mode. This new IDE was developed with the goal of preserving the same interface and user experience of the previous major version in order to provide a frictionless upgrade.

⚠️ This is beta software. Help us test it!


You can download the latest version from the software download page on the Arduino website.

Nightly builds

These builds are generated every day at 03:00 GMT from the main branch and
should be considered unstable:

Platform 32 bit 64 bit
Linux Nightly Linux 64 bit
Linux ARM ? Work in progress… ? Work in progress…
Windows Nightly Windows 64 bit installer
Nightly Windows 64 bit MSI
Nightly Windows 64 bit ZIP
macOS Nightly macOS 64 bit

These links return an HTTP 302: Found response, redirecting to latest
generated builds by replacing latest with the latest available build
date, using the format YYYYMMDD (i.e for 2019/Aug/06 latest is
replaced with 20190806)


If you need assistance, see the Help Center and browse the forum.

Bugs & Issues

If you want to report an issue, you can submit it to the issue tracker of this repository. A few rules apply:

  • Before posting, please check if the same problem has been already reported by someone else to avoid duplicates.
  • Remember to include as much detail as you can about your hardware set-up, code and steps for reproducing the issue. Make sure you’re using an original Arduino board.


If you think you found a vulnerability or other security-related bug in this project, please read our
security policy and report the bug to our Security Team ?️
Thank you!

e-mail contact: [email protected]

Contributions and development

Contributions are very welcome! You can browse the list of open issues to see what’s needed and then you can submit your code using a Pull Request. Please provide detailed descriptions. We also appreciate any help in testing issues and patches contributed by other users.

This repository contains the main code, but two more repositories are included during the build process:

See the for a technical overview of the application and instructions for building the code.

You can help with the translation of the Arduino IDE to your language here: Arduino IDE on Transifex.


This open source code was written by the Arduino team and is maintained on a daily basis with the help of the community. We invest a considerable amount of time in development, testing and optimization. Please consider donating or sponsoring to support our work, as well as buying original Arduino boards which is the best way to make sure our effort can continue in the long term.


The code contained in this repository and the executable distributions are licensed under the terms of the GNU AGPLv3. The executable distributions contain third-party code licensed under other compatible licenses such as GPLv2, MIT and BSD-3. If you have questions about licensing please contact us at [email protected].


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