This takes you to a list of files.
Currently you want:
[*antlr-3.0ea8.tar.gz|http://www.antlr.org/download/antlr-3.0ea8.tar.gz] for ANTLR3
and
[*antlrworks-1.0ea8.zip|http://www.antlr.org/download/antlrworks-1.0ea8.zip] for ANTLRWorks the GUI editor.