Cobol Cross reference tool for GnuCobol written in Cobol
CobXRef is a Cobol cross reference tool that reads a Cobol source program and produces a file suitable for printing 'as is' that contains all variables, procedure paragraphs and section names referenced where they are defined
as well as where they are used throughout the program or module as well as lists of unreferenced data names and paragraph & section names.
it is used as a stand alone program.
PL1DOC is a documentation tool for PL1 projects entirely written in Java. It currently supports PL1 version 2.3 (later releases will be captured in the future). PL1DOC produces HTML output and provides a tagset to allow a rich annotation of source files.