A compiler-translator which accepts PL/M source files and produces ANSI or K and R C as output. Includes documentation and translation examples. Free demo download.

Reference and how-tos for PL/1. Includes statement reference, built-in function reference, example code.

Provides automated programming language conversion services for PL/I, Cobol, and Fortran.

An Integrated Development Environment (IDE) with Analyzer, Editor, Browser, Graph, Metrics, from RistanCASE GmbH.

Classic test program, written in PL/1.

IBM Enterprise PL/I for z/OS, AIX, MVS/VM, VSE, Windows.

Developer of the Iron Spring PL/I compiler for OS/2 and Linux. Free download of alpha OS/2 version and documentation.

Vendor of PL/I for OpenVMS and Tru64. Download documentation and kits for the PL/I compiler for OpenVMS for both Alpha and VAX, and kits of the PL/I compiler for Tru64. No-charge hobbyist licenses available.

How Multics was built in a high-level language. Compiler construction and compiler features.

Reminiscences about a first experience with PL/I and IBM's PL/I(F) compiler in 1967, by Jim Horning.