New and Updated for IntelliJ IDEA

Quokka

Quokka is a rapid prototyping playground in your editor, with access to your project's files, inline reporting, code coverage and rich output formatting.

Scala

Adds support for the Scala language. The following features are available for free with IntelliJ IDEA Community Edition:.

GitToolBox

Enriches Git Integration with additional features [Home] [Issues].

I-Pascal

Object Pascal support for IDEA.

JetForcer | The Smartest Force.com IDE

JetForcer is the smartest Force.com IDE for handy Salesforce development with JetBrains IDEs.

Database Navigator

Database development, scripting and navigation tool.

Clojure-Kit

Clojure and ClojureScript plugin for IntelliJ-based tools.

Kotlin

By JetBrains
The Kotlin plugin provides language support in IntelliJ IDEA and Android Studio.

TeamCity

Provides integration with JetBrains TeamCity.