WAccounting software
W2Clix Software
WAccounting information system
WERPNext
WFreshBooks
WIGG Software
WJFire
WLedgerSMB
WMicrosoft Dynamics 365 Business Central
WMicrosoft Dynamics NAV
WMicrosoft Dynamics SL
WMicrosoft Money
WMYOB (company)
WIran Software & Hardware Co. (NOSA)
WOutright
WPassport Software
WQuicken
WRCA open-source application
WSage 300
WUnit4
WWave Financial
WXero (company)
WZipBooks
WZoho Office Suite