- Wishabi
- Wishlist
- Wistron Corporation
- Wix.com Ltd.
- Wizard Software
- Wizcom Technologies
- Wizet
- Wladimir Palant
- Wmode
- WMP Scripting Fix
- Wolf Consulting, Inc.
- Wolf Frameworks
- Wolfgang Roesner
- Wolfire Games
- Wolfram CDF Player
- Wolfram Research
- Wolters Kluwer
- Women Networks Ltd.
- Wonder Wizard 7702
- Wonder Wizard 7709
- Wonder Wizard Bulls Eye
- Wonder Wizard Scoreboard 7706
- Wonder Wizard Sharp Shooter
- Wonderware
- Wonga.com
- Word-Pdf-Convert Software
- WordLogic Corp
- WordPad
- WordPerfect
- WordStar
- WordWeb
- WordWeb Software
- Work4 Labs, Inc.
- Workbench Nostalgia
- Workboard Inc.
- Workbooks.com
- WorkCentre 3045
- WorkCentre 3210/3220
- WorkCentre 3315/3325
- WorkCentre 3550
- WorkCentre 4250
- WorkCentre 4260
- WorkCentre 5135/5150
- WorkCentre 5325/5330/5335
- WorkCentre 5735/5740/5745/5755
- WorkCentre 5765/5775/5790
- WorkCentre 6015
- WorkCentre 6400
- WorkCentre 6505
- WorkCentre 6605
- WorkCentre 7120/7125
- WorkCentre 7525/7530/7535/7545/7556
- WorkCentre 7755/7765/7775
- WorkCompEDI
- Workday, Inc.
- WorkForce Software
- Workgroup Server 60
- Workgroup Server 60 (50/25 MHz)
- Workgroup Server 6150
- Workgroup Server 6150/66
- Workgroup Server 7250/120
- Workgroup Server 7350/180
- Workgroup Server 80
- Workgroup Server 8150
- Workgroup Server 8150/110
- Workgroup Server 8550/132
- Workgroup Server 8550/200
- Workgroup Server 9150
- Workgroup Server 9150/120
- Workgroup Server 95
- Workgroup Server 9650/233
- Workgroup Server 9650/350
- WorkPLAN
- Workshare
- Worksighted
- Workslate
- WorkSmart.
- Worksoft
- Workspace.com
- Workspot, Inc.
- Workstation Specialists
- WorkTime
- WorkWave
- World
- World Forge
- World of Historic Computers
- World Synergy Enterprises
- World Wide Technology
- WorldAPP
- Worldweaver Ltd
- Wortmann
- WOT Services, Ltd.
- Wowrack
- Wowza Media Systems, Inc.
- WPG Americas
- Wrightsoft Corporation
- Write Brothers, Inc.
- WriteNow
- WRK Systems Inc