- KODAK i2800
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- KODAK SCANMATE i1120
- KODAK SCANMATE i940
- Koerting Hannover
- Kofax
- KOffice is a free open source office suite which is available for Windows, Linux, FreeBSD, and Mac O
- Kohjinsha
- Koingo Software, Inc.
- KollaSoft Inc.
- KOM Networks
- Komag, Inc.
- Komodo Edit
- Komodo Technology
- Komplett
- Konami
- Konami Picno
- Konami Picno 2
- Konan Technology
- Kongsberg SIM
- Konica Minolta
- Konqueror
- Konqueror
- Konrad Zuse
- Konrad Zuse
- Konrad Zuse (1910-1995)
- Konstant Infosolutions
- Kontron
- Kontron PSI 80
- Konversation
- Kopete
- Kore1
- Korea Computer Terminal Inc
- Korenix Technology Co., Ltd.
- Korrio
- Körting Tele-Multiplay 4000
- Körting Tele-Multiplay 6000
- Körting Tele-Multiplay 8000
- Körting Tele-Multiplay 825-042
- Körting TeleMultiplay L
- Kosmix
- Kovair
- Kovarus
- Kovid Goyal
- KPIT Cummins
- KPMG
- KPN grootzakelijke markt
- Kraft & Kennedy, Inc.
- Kreata Global Digital Media Services Pvt. Ltd.
- Krify Software Technologies (P) Ltd.
- Kris Rinne
- Krishnendu (Krish) Chakrabarty
- Kristen Nygaard
- Kroll Ontrack
- Kronos
- Krste Asanović
- Kru Interactive
- Krunali Patel
- Kryptiq
- KS AGROTECH Private Limited
- KS AGROTECH Private Limited
- KS059
- KS107
- KS136
- KS188
- KS218
- KS288
- KS566
- KS776 (Black)
- Ksnipe
- Ksnipe Software Submitter
- Ksnipe Submitter
- KT Corporation
- Kuddle, Inc.
- Kudos, Inc.
- Kulabyte
- Kun-Yao (K.Y.) Lee
- Kundli for Windows
- Kurt Gödel
- Kurt Lehovec
- Kurzweil Educational Systems
- Kutoka Interactive
- KVH Co. Ltd.
- Kword
- KWorld
- KXEN
- KYE Systems Corp.
- Kyocera Corporation
- kyocera FS C2626MFP
- kyocera FS-1035MFP/DP
- kyocera FS-1135MFP
- kyocera FS-1135MFP
- kyocera FS-1320D
- kyocera FS-1370DN
- kyocera FS-2020D
- kyocera FS-2100DN