Leaf is the re-writing of my old IDE,"Wide", from scratch.This time,the syntax highlighting works and is implemented in plain Java.The library used for richtexting of text is RichTextFX.
The current version is more of a beta, I'm only testing stuff like working of Syntax-highlighting, correct Tabbing etc. So, in a way,nothing specific, you can download and run the tests to see them working
Supports syntax highlighting for C, Java and Python