WinFax Merger is a FREE WinFax multiple-page fax files combiner/merger, able to combine/merge your separate multiple-page WinFax fxd fxr fxs fax files into single multiple-page fxm fax files in batches automatically.
For example: you have 3-page winfax fax named aaa001.fxr, aaa002.fxr, aaa003.fxr, you can merge them into one aaafax.fxm file that includes all 3 fax pages, with WinFax Merger.
WinFax usually save its multiple-page fax in several separate files, one page a file, like aaa001.fxr, aaa002.fxr, aaa003.fxr. If you open them by fax viewer (like Smart FaxSee, FaxSee Pro), or convert them to tiff, pdf or jpeg files by format conversion tools (like Batch Fax2Tif, Batch Fax to PDF, Batch Fax2JPEG), you may find that your multiple-page fax are in separate multiple tiff (or pdf) files, not all pages in one tiff (or pdf) file. Because the original fax files are in sereval separate files, not all fax pages in one file.
WinFax Merger is usefull for WinFax users. When you convert your winfax to tiff (or pdf) files by format conversion tools, you may find that your multiple-page fax are in separate multiple tiff (or pdf) files, not all pages in one tiff (or pdf) file.
If you don't want your converted multiple-page files in separate multiple files, you can do it easily: first merge your WinFax fax files with WinFax Merger, then convert your merged fax files with your format conversion tools.
Both GUI and command line modes are supported. Option to keep original file date.

WinFax Merger Download