XPL Programming Language One of the original "compiler compilers", is a derivative of PL/I and was widely ported. Documentation, links, and resources. http://www.cs.toronto.edu/XPL/

Datatek, Inc Provides automated programming language conversion services for PL/I, Cobol, and Fortran. http://www.datatek-net.com/dtk_conversion.htm

Development Assistant for PL/M An Integrated Development Environment (IDE) with Analyzer, Editor, Browser, Graph, Metrics. http://www.ristancase.com/da-plm/

The PL/I Programming Language Resources and links for PL/I. Compilers and tools list, bibliography. http://home.nycap.rr.com/pflass/pli.htm

IBM PL/I Overview IBM VisualAge PL/I for AIX, MVS/VM, OS/2, VSE, Windows. http://www-3.ibm.com/software/awdtools/pli/

Hello, World Program Classic test program, written in PL/1. http://www2.latech.edu/~acm/helloworld/pl1.html

AutoPLMtoc Automatically translates programs written in PLM language to C language. [Commercial] http://www.plmtoctranslator.com/

PLM2C: PL/M to C translator Produces ANSI or K&R C as output. Includes documentation and translation examples. http://plm2c.free.fr/

PL/I Resources Links, tutorial, function library, book and course references. http://www.users.bigpond.com/robin_v/resource.htm

PL/I Frequently Asked Questions Compiled by Robin Vowels. http://www.faqs.org/faqs/computer-lang/pli-faq/

Power vs. Adventure - PL/I and C Presentation comparing these programming languages, from a PL/I perspective. http://www.uni-muenster.de/ZIV/Mitarbeiter/EberhardSturm/PL1andC.html

Open-PL/I Compiler product for Unix and Windows, from Liant Software Corporation. http://www.liant.com/products/pl1/

A Few PL/I Hints By Michael Rask Christensen, including sample programs. http://hjem.get2net.dk/micrask/pli/pli.html

Regular Expressions: An Introduction An essential guide to one of the most useful tools in the web development: regular expressions. http://www.digitalamit.com/article/regular_expression.phtml