Mainframes

Alia Systems Limited - UK company performing bespoke software development for IBM mainframes, AS400, and UNIX systems. Also integrates legacy systems with emerging technologies.

HOB, Inc. - Offers development to facilitate mainframe connectivity and encryption.

H&W Computer Systems, Inc. - Develops system and application software for mainframes and PCs. Information about products and support.

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.