LegacyJ PERCobol
LegacyJ provides an ANSI-85 and extensions COBOL compiler, with modern IDE (Eclipse). PERCobol compiles COBOL source to Java bytecode for execution as applications or within appservers, with maintenance and debug remaining in COBOL. http://www.legacyj.com/lgcyj_perc1.html
OpenCOBOL
An experimental implementation of a COBOL frontend for GCC. [Open source, LGPL] http://www.open-cobol.org/gcc.html
TinyCOBOL Project
The TinyCOBOL Project is a COBOL compiler being actively developed by members of the free software community. It is being developed on the Linux OS, using a mix of C, LEX/YACC. It generates GNU assembler code, thus requires the GNU assembler and linker programs to create an executable binary. http://tiny-cobol.sourceforge.net/
KOBOL
Implementation of COBOL for Windows and Linux. By theKompany.com. http://www.thekompany.com/products/kobol/
ICOBOL and VXCOBOL
Egan Systems, Inc. develops the ICOBOL and VXCOBOL programming environments http://www.egns.com/
CObol2Java
An automatic tool for fast migration from Cobol source code to Java source code. Also Cobol2Java API is a set of Java API to build your own COBOL to Java source code translator. http://www.corporola.com/
Fujitsu NetCOBOL for .Net
NetCOBOL (previously called Fujitsu COBOL) for .Net is a complete COBOL development environment that allows you to create standalone COBOL applications and/or components for use with Microsoft visual tools. http://www.netcobol.com/products/windows/netcobol.html
GNU Cobol2C
(former GNU Cobol) A project to make a full Cobol-85 compiler, available for free under the GPL. A minimal Cobol-to-C translator is now available http://www.gnu.org/software/cobol/cobol.html