ANTLR 3.0, 3.1, 3.2, 3.3 and 3.4
ANTLR Launcher and Debugger(Java only)
ANTLR Built-in Interpreter
Source Formatter (Ctrl+Shift+F)
RailRoad diagrams
Custom targets
Automatically (on save) generate resources
Problem markers for errors and warnings in grammar files
Advanced text editor, code selection (F3) and code completion (Ctrl+Space)
Simple syntax highlighting for target language (Java, C#, Python, C, etc.)
Mark generated resources as derived
Advanced StringTemplate Editor (*.st and *.stg)
Advanced gUnit Editor (*.gunit and *.testsuite)