WAtari 8-bit family software
WAction! (programming language)
WAtari BASIC
WAtari DOS
WAtari Logo
WAtariWriter
WContiki
WDOS XL
WMini Office II
WMusic Construction Set
WPaperClip
WSoftware Automatic Mouth
WSpartaDOS X
WSpeedScript
WTurbo-Basic XL
WVisiCalc