The fallowing are some binary files and documentation available in several formats.
OpenCOBOL version 1.1-20090206: MinGW (32-bit) edition and source code.
TinyCOBOL version 0.66: MinGW (32-bit) edition and source code.
CobCy - COBOL to C++ translating compiler version 0.4.1.
Wildcat COBOL - a CSharp compiler version 0.1.15.