challenges in competitive games. The following Software Self Lookup (SSL) programs were evaluated by the [[Technology Committee]] and are approved for use in club and tournament situations as noted below.
; ==== [[Zyzzyva]]====* '''Features''': anagramming, definitions, word judge, word study* '''Developers''': developed by [[Michael Thelen]], is [[Ross Brown]]* '''Systems''': Linux, macOS, Windows* '''Notes''': certified and licensed, used at all major events, including the [[National SCRABBLE Championship]], [[National School SCRABBLE Championship]] and [[Canadian National SCRABBLE Championship]]: Systems: Linux, macOS, Windows: Acceptable for tournament and club play
; ==== [http://www.wolfberg.net/what/ '''WHAT''']====* '''Features''': anagramming, word judge* '''Developer''': developed by [[Mike Wolfberg]]: * '''System''': Windows* '''Notes''': Acceptable for tournament certified and club playlicensed
=== Tournament management ===
There is at least one popular software package not listed below, at the request of its publisher.
; ==== [[tsh]]====* '''Features''': tournament management, word judge* '''Developer''': developed by [[John Chew]]* '''Systems''': DOS, is Linux, macOS and Windows.* '''Notes''': used at all major events, including the [[National SCRABBLE Championship]], [[National School SCRABBLE Championship]] and [[Canadian National SCRABBLE Championship]]. It has a very rich set of features, but most directors need some help at first learning to use it. tsh runs under OS/X, Linux, DOS and Windowsits command-line interface.
== Study tools ==