I am using VMS 7.3-1 running SNA communication with my c application to the mainframe.
I plan to migrate to unix. Therefore I need a solution for SNA communication.
I read that parkersoftware.com have an SNA client for unix.
any further information?

Another solution is the CICS Transaction server, which runs on the mainframe. Does there any C API exist for CICS Gateway (CTG)?