gefax is an easy-to-use frontend for efax, written in C using GTK. With gefax you can send faxes over your modem to someone else from any program by printing the page to the gefax printer-filter.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.
