Links, tutorial, function library, book and course references.

PL/i (small i) is a PL/I-like language from Control Solutions, Inc. Tutorial includes overview, data type descriptions, statement syntax, and procedures for direct hardware and network access.

Project to create a native PL/I compiler using the GCC. Downloadable scanner and parser for pl1, and a set of test files and a very rudimentary build and test system.

Compiled by Robin Vowels.

An interactive workbench used to analyze and re-engineer legacy PL/I systems. Program overview and description, key features, hardware and software requirements.

Compiler product for Unix and Windows, from Liant Software Corporation.

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

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

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.

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