Compare two or three columns PDF files.

With Compare Suite you can compare PDF files that has two or three columns. It means that any PDF with columns can be compared to any word or .htm file

Q: Please check & advice. Also tell us whether we can compare two col. & three column files from the same software.

A: It depends on how do that text is represented in PDF files, typically Compare Suite convert PDF to text even in PDF has a columns, but resulted document will be structured badly. So I'd recommend to give it a try first.

More information about comparing Adobe Acrobat .pdf documents:

File comparison in paperless office -- comparing .pdf, .doc, .xls 

Compare PDF (Adobe Acrobat) files FAQ

Compare badly structured Adobe Acrobat PDF files with Microsoft Word DOC files.