First official release of Ceylon IDE

Today, we're proud to announce the first official release of the Ceylon IDE.


This release is fully compatible with the already-released Ceylon M1 "Newton" command line distribution which contains the compiler, documentation compiler, language module, and runtime. On the other hand, Ceylon IDE can be used as a standalone Ceylon development tool, even if the full Ceylon distribution is not already separately installed.

You can install Ceylon IDE from our Eclipse plugin update site. The welcome page is a gentle way to get started with Ceylon.

Main features

A full list of features with screenshots can be found here.

Among the features that have greatly enriched the IDE since its first pre-release builds, the following stand out:

  • A Ceylon perspective, welcome page, and cheat sheets.
  • Wizards to create new Ceylon projects, modules, packages, and units.
  • Cross-project dependencies and navigation: add another Ceylon project on the build path, and dependencies are automatically handled.
  • Full integration with the Ceylon module architecture: resolve dependencies in an external module repository, and easily export your Ceylon project as a module to a selected repository.
  • Enhancements to refactorings, including the ability to refactor even in dirty (unsaved) editors.
  • New quick-fixes: for example, when an identifier is unknown, automatically create a new file containing a stub for the missing declaration.
  • Improved autocompletion: proposals are now sorted to prioritize those which are assignable to the expected type, as well as those which are declared nearby.
  • Customization: easily configure your own colors for syntax highlighting.
  • And, of course, many adjustments and bug fixes to provide a stable release.

About Ceylon

This page provides a quick introduction to the language. The draft language specification is the complete definition.

Source code

The source code for Ceylon, its specification, and its website, and its IDE is freely available from GitHub:


Bugs and suggestions may be reported in GitHub's issue tracker.


The Ceylon community site includes documentation, the current draft of the language specification, the roadmap and information about getting involved.