Code editor

Open Komodo IDE

For over 20 years, the Komodo IDE was a proprietary development environment that worked best with web-related programming languages, including Python, PHP, Perl, Go, Ruby, Node.js, and JavaScript. It was published by ActiveState and went through three different teams, migrated through three different version control systems, and contributed to Mozilla's XPCOM framework. It even managed to survive for years after the frameworks it was itself built on, XUL and XULRunner, were dropped by Mozilla back in 2016. But in late 2022, ActiveState finally decided to retire Komodo IDE and, fortunately, make it open source at the same time, creating the Open Komodo IDE project from its 3.2 million lines of code. This was a brilliant thing to do, and it's something that ActiveState has some history with after previously releasing its editing component, Komodo Edit, some time ago.

None of this would be important if the Komodo IDE weren't worth your time, and Open Komodo is going to be a brilliant option if you've not yet found your perfect IDE – especially if you use Python. It's obviously a mature and stable application with the open source version continuing from the release of Komodo IDE 12. It will feel familiar to anyone who has used Visual Studio Code, because the main window is split into various panes for listing files, methods, and symbols, with a central tabbed editor in the middle. All of this is configurable, and the editor is absolutely fantastic. There's syntax highlighting, code completion and built-in refactoring, visual debugging, and integrated version control. Maybe it's the K in its name, but it integrates very well with KDE, and the editor is very reminiscent of Plasma's Kate editor. If you're working with HTML or Markdown, there's a live preview of the renderer output of your work, which makes it particularly useful for working with projects with large documentation sets – something often neglected by most IDEs.

Project Website

Komodo IDE is now open source and entirely dependent on its brilliant community for updates and builds.

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