Finite-State Technology Homepage at XRCE
Syntax and Semantics of Regular Expressions
More about Syntax of Regular Expressions
Finite-State Tokenizer ('tokenize' utility)
Lexical Lookup ('lookup' utility)
Finite-State Software Tools
Two-Level Rule Compiler (twolc)
Two-Level Rule Compiler (web-based documentation)
Two-Level Rule Compiler Chapter (PDF format. Could not be included in the book)
Finite-State Lexicon Compiler (lexc)
Xerox Finite-State Tool (xfst)
The lookup application