In quasi-historical order: Original Authors: Davy Temperley: http://theory.esm.rochester.edu/temperley/ Daniel Sleator: http://www.cs.cmu.edu/~sleator/ John Lafferty: http://www.cs.cmu.edu/~lafferty/ Vast amounts of additional work has been done by many different linguists and software developers. The current lead developers are Linas Vepstas: http://linas.org/ Amir Plivatsky Arabic dictionaries were provided by Warren Casbeer and Jon Dehdari Farsi dictionaries were provided by Jon Dehdari The SAT parser code was developed by Filip Maric as a part of the 2008 Google Summer of Code (GSoC) project for OpenCog. Russian dictionaries were provided by Sergey Protasov Turkish dictionaries by: Can John Bruce Turkish sharply revised: Tatiana Batura, Maria Mitkovskaya, Natalya Semenova Indonesian dictionaries were provided by: Hendy Irawan (ceefour) Kazakh dictionaries from: Tatiana Batura, Aigerim Bakiyeva, Aigerim Yerimbetova ------------------------------------------------------------------ Some of the people who have contributed patches and fixes include: (In alphabetical order) Artem Gayardo-Matrosov Bill Hayes Borislav Iordanov Valery Kholodkov Vikas N Kumar Dom Lachowicz Per Larsson Stephen Leibowitz Marc Maurer Evgenii Philippov Sergey Protasov Sampo Pyysalo René Rhéaume Lian Ruiting Murilo Saraiva de Queiroz Fridrich Strba Simon Stuart Peter Szolovits Dimitri Timofeev Alexander Tkachuk Vincent Untz Max Vyaznikov http://myclerk.ru Bruce Wilcox