diff --git a/README.md b/README.md
index f66ce12..371988b 100644
--- a/README.md
+++ b/README.md
@@ -280,7 +280,7 @@
 #### Java
 - [![Open-Source Software][OSS Icon]](https://www.bluej.org/versions.html) [BlueJ](http://bluej.org/) - A free Java Development Environment designed for beginners, used by millions worldwide.
 - [Eclipse](https://eclipse.org/ide/) - Eclipse is famous for our Java Integrated Development Environment (IDE), but can also download packages to support C/C++ IDE and PHP IDE.
-- [IntelliJ IDEA](https://www.jetbrains.com/idea/) - Powerful IDE for JAVA.
+- [IntelliJ IDEA](https://www.jetbrains.com/idea/) - Powerful IDE for JAVA. Community version is [open sourced](https://github.com/JetBrains/intellij-community).
 
 #### Javascript
 - [Webstorm](https://www.jetbrains.com/webstorm/) - Powerful IDE for modern JavaScript development, made by JetBrains.