Several people have contributed to precursors to this library or contributed key components used to develop this library.

• Donald Hindle was the author of a language modeling toolkit (LMTools) which helped in various ways in the design of the GRM statistical language modeling utilities.

• Mark-Jan Nederhof is a co-author of the algorithms used in the GRM library for regular approximation of context-free grammars.

• Fernando Pereira helped with many discussions about the design of the GRM library. He is a co-author of the context-free grammar compilation algorithm that was generalized to take as input finite-state transducers and was implemented in the GRM library. Fernando Pereira is also a co-author of the AT&T FSM library.

• Michael Riley helped with many discussions about the design of the GRM library, he wrote an earlier version of the counting utility and is a co-author of the AT&T FSM library.

• Richard Sproat helped checking and testing the results of the context-dependent rule compilation and also wrote an earlier version of the FSMFailure Class.