PLEX is an open source programming language created in 1975.

PLEX (Programming Language for EXchanges) is a special-purpose, concurrent, real-time programming language. The PLEX language is closely tied to the architecture of Ericsson's AXE telephone exchanges which it was designed to control. PLEX was developed by Göran Hemdahl at Ericsson in the 1970s, and it has been continuously evolving since then. Read more on Wikipedia...

• PLEX Wikipedia page
• PLEX first developed in Telefonaktiebolaget LM Ericsson
• See also: (2 related languages)Fortran, Erlang
• Read more about PLEX on the web: 1.