| Alia Systems Limited: UK company performing bespoke software development for IBM mainframes, AS400, and UNIX systems. Also integrates legacy systems with emerging technologies. |
| H&W Computer Systems, Inc.: Develops system and application software for mainframes and PCs. Information about products and support. |
| HOB, Inc.: Offers development to facilitate mainframe connectivity and encryption. |
| Innovative Software Solutions: Develops and maintains applications for the AS/400 platform. Also migrates and ports existing software and data. |
| IT Doctors: Association of UK-based mainframe consultants. Highlights platforms and languages supported. |
| Mainframe Software Innovations: Application performance improvement specialists that reduce run-time and CPU-time of application programs in an IBM mainframe environment. |
| Maintec Technologies: Offers training and development services. |
| ResQNet: Develops graphical Java connectivity products that web-enable Mainframe and AS/400 systems and automatically present their screens as GUIs. |
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