- Windows SteadyState
- Windows XP Service Pack 1a (SP1a)
- WinDVD
- WinFax
- WinGraphic
- WinRAR
- WinRAR (32-bit)
- WinRAR (64-bit)
- WinSCP
- Winstep Nexus Dock
- Winstep Xtreme
- WinUtilities Free Edition
- WinUtilities Professional Edition
- WinWAP
- WinWAP
- WinZip
- WinZip
- WinZip Command Line
- WinZip Courier
- WinZip Driver Updater
- WinZip Registry Optimizer
- WinZip System Utilities Suite
- Wise Disk Cleaner Free
- Wise Registry Cleaner Free
- WMP Scripting Fix
- Wolfram CDF Player
- WordPad
- WordPerfect
- WordStar
- WordWeb
- WorkPLAN
- WorkTime
- WriteNow
- wxWidgets
- X10 (Programming Language)
- Xenix
- Xilisoft 3GP Video Converter
- Xilisoft Download YouTube Video
- Xilisoft Video Converter Platinum
- Xilisoft Video Converter Ultimate
- Xilisoft Video Editor
- xTuple Postbooks
- XviD Video Codec
- Yahoo Messenger
- Your Uninstaller
- YouTube Download Manager Pro
- YouTube Downloader
- YouTube Downloader Accelerator Pro
- YouTube Music Downloader
- YouTube Video Downloader
- YouTube Video Player
- z/OS
- Z/TPF
- z/VM
- z/VSE
- Zign Track Pro
- Zip Unzip by Click
- ZK Framework
- Zoho Office Suite
- Zuken CADSTAR
- Zuken CR-5000
- Zuken E3 series