RingCentral Fax - RingCentral Fax is an online fax solution that enables companies to avoid the bulkiness of paperwork and maintenance costs of fax machines and charges of phone lines.
LibreOffice - Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
Hellofax - Easy. Reliable. Online faxing. Send & receive faxes from anywhere.
ONLYOFFICE - ONLYOFFICE is a complete office and productivity suite.
XM Fax - XM Fax is a file exchange solution that provides companies and users with secure transmission of their highly sensitive documents, including contracts, financial statements, transcripts, legal notices, etc.
Apache OpenOffice - Apache OpenOffice is an open source, office document productivity suite.