- Champ World
 - Supplies multi layer coated glass filters. - Cintel Co., Ltd.
- Web server and cache load balancer.
- Device Computer
- Computer reseller, software distributor, and Internet solution provider.
- Elex Computer
- HanA System
- Network system maker.
- Hanmesoft Corp
- Provides Korean language software development and consultation; e.g. Korean-Wordprocessor, a Korean add-on tool for English Windows.
- HurbinSoftware
- Produces automation programs for the metal industry.
- IBM Korea
- Imagedrome
- Offering interactive media design service and graphics applications development.
- InfoLogic, Inc.
- Developer of human oriented software for professional information processing based on computer and media.
- Korea Computer, Inc.
- Manufactures LCD monitors as well as systems and solutions for financial institutions in Korea.
- Microsoft Korea (3)
- NEXCell Telecom Co., Ltd.
- Makes it possible to place domestic and international calls from a personal computer to any telephone in the world.
- Sarotech
- Manufacturer and exporter of device enclosures and external storages.
- Touchnet
- Touchscreen distributor.
- Tricom
- Software distributor in Korea.
- Unitel
- WDSoftware WWW Zone
- Provides Windows utility sharewares. Products include MultiWin, a multibooter for Windows installation in single drive.
- Yoon Design Institute
- Professional typeface development team devoted to Korean typeface development.
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