http://www.jetbrains.com/idea/features/editions_comparison_matrix.html Freemarker, Velocity
| IDE Features | Ultimate Edition | Free Community Edition |
| Darcula — The darker UI theme. | Y | Y |
| Android — UI Designer, Layout Refactorings, etc. | Y | Y |
| Maven, Gradle, Ant, Gant Build Tools | Y | Y |
| Unit Testing and Code Coverage — JUnit, TestNG, Spock; Cucumber (for Java and Groovy), etc. |
Y | Y |
| Issue Tracking Integration — YouTrack, JIRA, Lighthouse, Pivotal Tracker, GitHub, Redmine and Trac. |
Y | Y |
| Local History | Y | Y |
| Context Management | Y | Y |
| Eclipse Project Interoperability | Y | Y |
| Swing GUI Designer | Y | Y |
| Code Spell Checker | Y | Y |
| Structural Search & Replace | Y | Y |
| OSGi — available via a free plugin. | Y | Y |
| Database Tools — SQL Editor, Schema Definition Editor, Diagrams. | Y | N |
| UML Designer — Analysis, Modelling, Refactorings | Y | N |
| Dependency Structure Matrix | Y | N |
| Maven Dependency Diagram | Y | N |
| Code Duplicates Detection | Y | N |
| Language Support Language support includes Smart Completion, Profound Navigation, On-the-fly Analysis, Intentions, Quick Fixes, Safe Refactorings, Debugger and many other productivity-boosting features. |
Ultimate Edition | Free Community Edition |
| Java | Y | Y |
| Scala — including ScalaTest, specs2; available via a free plugin. | Y | Y |
| Groovy | Y | Y |
| Clojure — available via a free plugin. | Y | Y |
| XML, XSD, DTD | Y | Y |
| Regular Expressions | Y | Y |
| Dart — available via a free plugin. | Y | Y |
| HTML, CSS | Y | Y |
| JavaScript, CoffeeScript, TypeScript | Y | Y |
| ActionScript | Y | Y |
| Freemarker, Velocity | Y | Y |
| XSL, XPath | Y | Y |
| SQL — PostgreSQL, MySQL, Oracle, Microsoft SQL Server, etc. | Y | N |
| Ruby, JRuby — available via a plugin. | Y | N |
| Python — available via a plugin. | Y | N |
| PHP — PHPUnit, Smarty, etc. available via a plugin. | Y | N |
|
Frameworks and Technologies |
Ultimate Edition | Free Community Edition |
| Spring Framework — Core, MVC, WebFlow, Web Service, Data, Security, Integration, Roo, etc. | Y | N |
| Java EE — Servlets, JSP, JSF, Web Services, CDI, Bean Validation, etc. | Y | N |
| JPA, Hibernate — Completion, Navigation, Refactorings, Queries, Diagrams, etc. | Y | N |
| GWT — Google Web Toolkit | Y | N |
| Vaadin | Y | N |
| Grails | Y | N |
| Play Framework — Play 1.x and Play 2.x | Y | N |
| JBoss Seam | Y | N |
| Struts — Struts 1.x and Struts 2.x | Y | N |
| Griffon | Y | N |
| AspectJ | Y | N |
| Thymeleaf | Y | N |
| Tapestry | Y | N |
| Sass, LESS, Stylus, Compass | Y | N |
| Rails, RubyMotion — available via a plugin. | Y | N |
| Node.js — available via a plugin. | Y | N |
| Django — available via a plugin. | Y | N |
| Adobe Flex, AIR — including AIR Mobile for iOS and Android. | Y | N |
|
Application Servers |
Ultimate Edition | Free Community Edition |
| Tomcat | Y | N |
| TomEE | Y | N |
| GlassFish | Y | N |
| JBoss AS, WildFly | Y | N |
| Oracle WebLogic | Y | N |
| IBM WebSphere | Y | N |
| Geronimo | Y | N |
| Resin | Y | N |
| Jetty | Y | N |
| Virgo | Y | N |
| Version Control Version control tools includes a unified interface and smart tools for Update, Commit, Merge, Diff and other operations with version control systems. |
Ultimate Edition | Free Community Edition |
| Git, GitHub | Y | Y |
| Subversion | Y | Y |
| Mercurial | Y | Y |
| CVS | Y | Y |
| Team Foundation Server | Y | N |
| ClearCase | Y | N |
| Perforce | Y | N |
| Visual SourceSafe | Y | N |
| Customer Support | Ultimate Edition | Free Community Edition |
| IntelliJ IDEA Community Forums and Issue Tracker | Y | Y |
| 24/7 Support | Y | N |