Open Source COBOL Software

GnuCOBOL (formerly OpenCOBOL) is a free, modern COBOL compiler. GnuCOBOL implements a substantial part of the COBOL 85, X/Open COBOL and newer ISO COBOL standards (2002, 2014, 2023), as well as many extensions included in other COBOL compilers (IBM COBOL, MicroFocus COBOL, ACUCOBOL-GT and others). GnuCOBOL translates COBOL into C and internally compiles the translated code using a native C compiler. Build COBOL programs on various platforms, including GNU/Linux, Unix, Mac OS X, and Microsoft Windows. GnuCOBOL has also been built on HP/UX, z/OS, SPARC, RS6000, AS/400, along with other combinations of machines and operating systems. Copyright 2001-2024 Free Software Foundation, Inc. The cobc compiler is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the FSF; either version 3, or (at your option) any later version. The libcob run time support source tree is licensed under the GNU LGPL.

The RecordEditor is a Data File editor for Flat Files (delimited and fixed field position). It supports Unix / PC / Legacy (e.g. Mainframe) file formats, both Text and binary files. The Editor uses a Record-Layout description to format the files. This is ideal for Fixed width (Text or Binary) files, Cobol Data Files, Mainframe files and complicated Csv files. Cobol Copybooks can be used to format Cobol Data files. As well as an editor, The following utilities are supplied * Formatted Compare * File Copy and reformat Utility * FileWizard this is use to work out the format of a File. It can generally find both Text and binary / packed deicimal fields in a file For Simple Csv you should look at its sister project reCsvEditor. Note: The core Editor code is also used in the "Protocol buffers editor" and "Avro Editor"

COBOL Utilities Project collects free and open-source COBOL utilities, libraries, and test suites, which are independent of any specific COBOL compiler. COBOL-UP supports free and open development. A teamwork discussion group has been established. Threads will be focused, the forum open to any and all COBOL. Developers are encouraged to signal interest in write permissions, as this will be an open to all, COBOL utility project. Mainframe, mid-range, Mac, PC, Hercules, Raspberry. Signal interest, we'll set you up with some (vetted) file, distribution and communication space. Wildcat, GnuCOBOL, Micro Focus, Elastic, RainCode, IBM, Tiny COBOL, all the others, all in. COBOL-UP

SQL precompiler developed for Gnu-COBOL and MySql.

a command line preprocessor to use gtk libraries with opencobol 1.1 with object orientation syntax giving it gui capabilites. Ultimate resource can be uploaded from www.opencobol.altervista.org the site contains a translator to get in your native language all details about guicobol. The incoming version will update within some weeks. it uses the AGAR GUI TOOLKIT. Do not forget to visit github to get latest changes... here will be uploaded less frequent as final version (expected for april)

IDE with debugger integrated for develop with z390 emulator. English and Spanish Interface is released. * Added an automatic z390 portable mainframe validator to be configuration easily

A COBOL debugger for GnuCOBOL written in GnuCOBOL. Works with both current GnuCOBOL and old GnuCOBOL/OpenCOBOL 1.1; could be used for other vendors with slightly modifications, too. Take a look at https://gnucobol.altervista.org/tp-cobol-debugger/

The cobcurses project has moved to github.com. Visit https://github.com/ve3wwg/cobcurses for all future project updates and documentation. This project consists of a Cobol interface to curses(3X) using a Screen Designer utility. This project is being developed for use with the Open-Cobol compiler project.

This project will convert Cobol Data Files to/From Xml files using a Cobol Copybook. It provides both a Batch and Java/JVM for conversion

Coboldoc is a java web 2.0 style interface for analyzing COBOL. It maintains its own cross reference database for static & dynamic calls to help with impact analysis or for general COBOL surfing. It's also designed to run directly on z/OS

The Copybook Adapter Generator will generate a Java object graph based on a copy book, or set of merged copybooks (i.e. header, body, footer). Handles length validation, proper field padding, redefines, etc.

Generator for Geekcode 2.1 written in COBOL.

This project has moved to GitHub ! The version here at SourceForge will remain for historic purpose. Koopa is a parser generator, made for COBOL. It can handle source files in isolation (no preprocessing required) and doesn't mind the presence of CICS/SQL fragments. The grammar is easily extensible in a way which minimizes the impact on the overall code.