IBM's Interactive System Productivity Facility (ISPF).
Copying from wikipedia:
ISPF primarily provides an IBM 3270 terminal interface with a set of panels. Each panel may include menus and dialogs to run tools on the underlying Time Sharing Option (TSO). Generally, these panels just provide a convenient interface to do tasks—most of them execute modules of IBM mainframe utility programs to do the actual work. ISPF is frequently used to manipulate z/OS data sets via its Program Development Facility named ISPF/PDF, where PDF refers to Program Development Facility.
SPF was developed and sold in the late 1970's. ISPF was sold in the early 1980's. I think the minicomputer emulators of ISPF mentioned in Wikipedia, like SPFPC, were sold in the late 1980's. The first time I actually used ISPF was 1982. Before that, I worked with minicomputers in the oil and gas industry.