CSI International (Connectivity Systems, Inc. + B I Moyle Associates, Inc.)
Software DevelopmentOhio, United States2-10 Employees
CSI International is an independent software vendor delivering software and consulting solutions to customers who operate IBM z/OS and z/VSE environments. Founded in 1995 as Connectivity Systems, Inc., it initially provided a native TCP/IP solution for z/VSE that quickly became widely adopted. In 2002, Connectivity Systems acquired B I Moyle Associates, Inc., and the business was integrated under CSI International. Based in Williamsport, Ohio, the company maintains a small team and focuses on developing, supporting, and introducing software for mainframe systems while aiming to reduce IT costs. A recent development is CSI International being named a GSE European Strategic Partner for 2025.