Here am trying to convert SGML to XML using OpenSP, http://openjade.sourceforge.net/ using those link I got source file and instruction but I am unable to build Win EXE, So please provide me OSX EXE if available.
Note: Already I visited Links:
Windows binaries for OpenSP 1.5.2 are available from https://sourceforge.net/projects/openjade/files/opensp/1.5.2/.
Included in OpenSP-1.5.2-win32.zip is osx.exe, which is the SGML to XML converter you are looking for.
Documentation can be found here: http://openjade.sourceforge.net/doc/index.htm.