A free COBOL compiler
Accounting system for smaller companies written in GnuCobol.
Cobol Cross reference tool for GnuCobol written in Cobol
EDITEL is a screen editor/code generator for GnuCOBOL programmers
A collection of GnuCOBOL programs
A COBOL debugger for GnuCOBOL/OpenCOBOL written in GnuCOBOL
Cobol Dialogue System / Web based
COBOL Plugin for Eclipse
All in, COBOL