IntelliJ IDEA is the JetBrains IDE for pro development in Java and Kotlin. Built for your comfort, it unlocks productivity, ensures quality code, supports cutting-edge tech, and protects your privacy.




The best open source alternative to Codeanywhere is IntelliJ IDEA. If that doesn't suit you, our users have ranked more than 25 alternatives to Codeanywhere and 18 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Codeanywhere are Ona (Previously Gitpod), Phoenix Code, Cosmic IDE and GitLab Web IDE.
IntelliJ IDEA is the JetBrains IDE for pro development in Java and Kotlin. Built for your comfort, it unlocks productivity, ensures quality code, supports cutting-edge tech, and protects your privacy.




Ona is an open-source developer platform automating the provisioning of ready-to-code development environments.



Phoenix Code is a text editor designed to make coding as intuitive and fun as playing a video game - specially crafted for web developers, designers, and students.

There are a lot of cases where you want to quickly test some Java code but don't have your computer open besides you. You open your browser and search for some website for this purpose. But you're neither guaranteed to have internet all the time (do you?




The Web IDE is an advanced editor with commit staging. You can use the Web IDE to make changes to multiple files directly from the GitLab UI.

Koding is a self-hosted development environment for teams to come together and code in the browser. Developers can work, collaborate, write and run apps without jumping through hoops and spending unnecessary money.



A lightweight yet powerful IDE/code editor that comes in both Web and desktop editions, the latter written with PHP and including choices for several platforms (Windows, Linux, Mac).


Codiad is an open source, web-based, cloud IDE and code editor with minimal footprint and requirements


Atheos is a web-based IDE framework with a small footprint and minimal requirements, built on top of Codiad by FluidByte and the Codiad Team.


Using the Devcontainer specification, you can define your dev environment as code. Open your dev environment and start to code instantly.

Free version available. Codeanywhere has moved its free tier to a 7 day free trial.