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

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.

IBM research report describing the extension of PL8 to support 64-bit addressing, its implementation as a GCC front end, and the validation of the new compiler. Evaluation of PL8 as a language for highly reliable low-level programming.

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

Paper describing syntax and semantics of SIMPL-X, a transportable systems programming language based on PL/I with Algol features.

Resources and links for PL/I. Compilers and tools list, bibliography.