Faster LEX
(FLEX) A reimplementation of the Lex scanner generator, by Vern Paxson <vern@ee.lbl.gov>.
Flex++ produces C++ and aflex produces Ada.
FTP flex-2.3.8.tar.Z from a GNU archive site or ftp://ftp.ee.lbl.gov/pub/flex-2.4.3.tar.Z.
["The FLEX Scanner Generator", Vern Paxson <vern@ee.lbl.gov>, Systems Engineering, LBL, CA].