- Ultra Gladiator Mid-Tower Case
- Ultra LS400 Lifetime Series 400W Power Supply
- Ultra LSP550
- Ultra LSP650
- Ultra LSP750
- Ultra MP4 Video Converter
- Ultra Products
- Ultra Rogue M925 Full Tower Gaming Case
- Ultra Rogue M950
- Ultra X4 750-Watt Modular Power Supply V2
- Ultra X4 Modular 1050-Watt ATX Power Supply V2
- Ultra X4 Modular 850-Watt ATX Power Supply V2
- Ultra XBlaster Mid-Tower V2 Case
- ULTRA XBlaster Pro U12-42350 Mid-Tower Case
- UltraEdit
- Ultraget Video Downloader Free
- UltraISO Premium
- Ultrasis
- Ultrix
- Umax
- Umax AV210C2
- Umax PowerLook 2100XL
- UMAX Technologies
- Umbra Software Ltd.
- Umbrella Managed Systems
- Umbrella Worldwide Corporation
- Umoove Ltd.
- UMPlayer
- UMPlayer
- UNAVCO
- Unbounded Solutions
- Undefined
- Undelete & Unerase
- Undersea Adventure
- UnderWare Inc
- Underwood Typewriter Company
- Ungermann-Bass
- Unhaggle, Inc.
- Unica
- Unicom Global
- Unicomp, Inc.
- Unicru
- UniDisk 3.5
- UniDisk 5.25
- Unified Inbox Pte Ltd.
- Unified Software Technologies LLC
- Unified Technologies Inc.
- Unifosa Corp
- Unify Corporation
- Unilogik Systems Inc
- Unimatrix
- Uniphore Software Systems Private Limited
- Uniport Computers Ltd
- uniRow Inc
- UniSoft Corporation
- UniSoma
- Unison Operating System
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- Unisonic Olympian 2600
- Unisonic Products Corporation
- Unisonic Sportsman T101
- Unisonic Tournament 100
- Unisonic Tournament 1000
- Unisonic Tournament 102
- Unisonic Tournament 150
- Unisonic Tournament 200
- Unisonic Tournament 2000
- Unisonic Tournament 2501
- Unistar-Sparco Computers, Inc.
- Unisys Corporation
- Unisys Icon
- UNIT4
- Unit4
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- Unitask Software
- United Computer Sales & Service, Inc.
- United Data Technologies Inc.
- United First Financial
- United Global Technologies
- United Internet AG
- United Microelectronics Corporation
- United Online, Inc.
- United Systems Computer Group
- United Technology Group, LLC.
- Unitrends
- Unity Technologies
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- UNIVAC 1104