TkFax is a Tcl/Tk based GUI fax program supporting efax or sendfax.
Its GUI is integration of make/send/receive faxes includs editing cover pages, attaching files, and optionally scanning documents by TkScan. All with multi language support.
fax2pdf provides a means to convert sets of G3 fax pages (encoded in a
TIFF variant) into PDF.
This can be used to convert fax pages received with eg. HylaFAX into a
file format readily accessible/viewable with programs on most platforms.