Yepp

From ESEwiki

YEPP is an Eiffel Parser Producer, in the purest GNU tradition.

It replaces the venerable lex/yacc couple for SmartEiffel.

It is a simple encapsulation of the parse library. It reads grammar files and produces an Eiffel class that can be used to parse texts using the given grammar.

YEPP itself is written using the parse library, making the design very consistent and self-contained.