The Free On-line Dictionary of Computing (30 December 2018):

Purdue Compiler-Construction Tool Set
PCCTS

    (PCCTS) A highly integrated lexical analser generator
   and parser generator by Terence J. Parr ,
   Will E. Cohen and Henry G. Dietz , both
   of Purdue University.

   ANTLR (ANother Tool for Language Recognition) corresponds to
   YACC and DLG (DFA-based Lexical analyser Generator) functions
   like LEX.  PCCTS has many additional features which make it
   easier to use for a wide range of translation problems.  PCCTS
   grammars contain specifications for lexical and syntactic
   analysis with selective backtracking ("infinite lookahead"),
   semantic predicates, intermediate-form construction and
   error reporting.  Rules may employ Extended BNF (EBNF)
   grammar constructs and may define parameters, return values,
   and have local variables.

   Languages described in PCCTS are recognised via LLk parsers
   constructed in pure, human-readable, C code.  Selective
   backtracking is available to handle non-LL(k) constructs.
   PCCTS parsers may be compiled with a C++ compiler.  PCCTS
   also includes the SORCERER tree parser generator.

   (ftp://marvin.ecn.purdue.edu/pub/pccts/1.10).

   UK FTP (ftp://src.doc.ic.ac.uk/
   computing/programming/languages/tools/pccts/).  Macintosh
   FTP (ftp://maya.dei.unipd.it/pub/mac/).

   Mailing list: pccts-users-request@ahpcrc.umn.edu ("subscribe
   pccts-users your_name" in the message body).

   E-mail: Terence J. Parr , Roberto Avanzi
    (Mac port).

   (2000-10-30)