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Most of our engineers do not get any errors at all during compiling because IntelliJ IDEA catches them all during editing. The time we save is remarkable.

Ken Watts, VP Platform Engineering, Documentum

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The Most Intelligent Java IDE — Now Free and Open Source

We believe IntelliJ IDEA to be the best Java IDE on the market — and the world will only gain if more people start using it. That's why we decided to remove the main barrier — the price tag, and introduce IntelliJ IDEA 9 in two editions.

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Community Edition — Free and Open Java IDE

  • Intelligent code editor has all the smarts for understanding Java code; provides refactorings, code inspections and intentions, super-fast navigation — all that we have accumulated over the years.
  • Integrates with such essential tools as JUnit and TestNG, Ant and Maven, and popular version control systems: CVS, Subversion and git.
  • Provides IntelliJ IDEA's famous XML-Java interoperability and comprehensive Groovy programming language support.
  • The Swing UI designer complements the suite of tools for developing Java desktop applications — such as IntelliJ IDEA itself.

There is also a full-featured commercial Ultimate Edition, with the complete set of web and enterprise development tools, traditionally providing the top-quality support for the most important modern technologies and frameworks.

For detailed comparison of both editions see the Feature Comparison Matrix.