Other
- The Web Transport System (WTS), a Transport social network
- The Westminster Theological Seminary, a Christian graduate institution
- The Watchtower Society (aka Watch Tower Bible and Tract Society of Pennsylvania), the primary corporation for administration of Jehovah's Witnesses' activities worldwide
- Windows Terminal Server, a component of Microsoft Windows to access a computer remotely
- Wind Turbine Syndrome, various illnesses attributed to proximity to wind turbines
- Want to show, a frequently used phrase in mathematics
- Window Technology Systems, a software company based in Middleton, Wisconsin
- World Tour Soccer. A game released on the PS2 PSP and Xbox.
- World Tax Services. An international Tax consultancy
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