• Iron Spring PL/I Users' Forum (http://tech.groups.yahoo.com/groups/ISPLI)

The following links to other sites have been included as a convenience. Iron Spring Software takes no responsibility for their content.

• The PL/I Language
  PL/I compilers and Tools, PL/I Bibliography, PL/I Programming Style Guide, PL/I Sample Code.

• PL/I Resources
  PL/I Newsletter issues, IBM PL/I Connection issues, PL/I open-source code.

• IBM PL/I for MVS & VM Language Reference in Bookmanager format at IBM.

• Usenet comp.lang.pl1 newsgroup (also available on Google Groups).

• Serenity Systems International: eComStation
  eComStation is fully OS/2 compatible and will run your existing OS/2 applications!

Thanks to the Internet Archive, the full texts of the following two introductory books on PL/I are available online:

• Hughs, Joan K. PL/I Structured Programming (3rd ed.)
• Abrahams, Paul. The PL/I Programming Language.