Audit software, consulting and training company. ACL Client/Server integrates ACL for Windows with ACL for OS/390, as well as the ACL for IMS and DB2 optional interfaces.

Mainframe change management and testing software, for z/OS, including its Unix System Services (USS) component.

IBM mainframe z/OS capacity planning and performance consultant. His LPAR Capacity and Software Usage Analysis (LCS) software helps plan, implement, monitor and audit Workload License Charges (WLC) for software products.

Specializing in TSO, file transfer, encryption and print software, including VTAM Multi-User Platform (MUP), a high performance TSO replacement.

Enterprise scheduling software with the ability to interface to the mainframe.

Allen Systems has a large number of mainframe software products, many from the companies it has acquired, including Entact, Landmark, Viasoft, Beta, Platinum, Emprise, Network Software Associates (NSA), SISRO, MSP, Firesign and Impact (IST).

Software company that develops and distributes z/OS and VSE/ESA systems software used for Storage Administration, Capacity Planning, Data Security, Disaster Recovery, System Productivity and CICS Productivity.

A Swedish software company that distributes several products and has created one of their own. InterSession/MENU is a 3270 Session Manager for z/OS, VSE/ESA and z/VM. It includes Single Sign-On (SSO) and a built-in TN3270 server.

TCP/IP (TN3270, TN5250) and SNA terminal emulation software to access mainframe, AS/400, UNIX and DEC systems. 3270, 5250 and VT220 emulation from Windows, Web, Java and Terminal Server. Plus Aviva HostPrint Server.

BIM provides VSE/ESA, z/OS and CICS software products, VSE/ESA, z/VM and CICS systems programming consulting services, and computer time.