Alternative Solutions- PLM2C
- http://plm2c.com/
- 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.
Kednos, Inc.
- http://www.kednos.com/
- 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.
RainCode
- http://www.raincode.com/pl1lg.html
- Language processing technologies and services for PL/I. The RainCode Engine for PL/I parses "virtually all PL/1 dialects available today" for quality assessment, migration, standards compliance, and documentation.
Wikipedia: PL/I
- http://en.wikipedia.org/wiki/PL/I
- Encyclopedia article containing a brief history of the language, a discussion of design and implementation issues, and the advances PL/I contributed to language design.