NConvert v5.00 for Windows/Windows 64bits/Linux/Linux 64bits/MacOS X/FreeBSD/DOS32 LE & OS/2 is available. NConvert can be downloaded on the XnView download page.

Works. Some space for improvements, though:
- DOS version reports itself as "for OS/2" (see post below)
- Undocumented: I suggested this http://www.file-pasta.com/file/1205544602.875_NC.ZIP some time ago ... but seems got lost

- Commandline parsing is very rigid but not very correct - works with good commandline, but at the very 1st bug it gets confused and rises a mess (complains about "files" not found while encountering options)
- Add text (I'll create new thread on this)