j2 Global Communications

j2 Global Communications provides a variety of business-critical communications and messaging services through its global communications/telephony/messaging network. j2 provides services to more than 9.0 million subscribers around the world. j2's network provides billing, customer support, transport, and value-added applications and local presence on a global basis.

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eFax Messenger
Free
Comprehensive Overview of eFax Messenger for Mac
Mac
eFax Messenger Plus
Trial version
eFax Messenger Plus: Fax from Anywhere, Anytime
Windows
eVoice - Add a Business Number or 2nd Phone Line to Your iPhone
Free
Comprehensive Overview of eVoice for iPhone
iOS
j2 Messenger
Free
Efficient Chat Solution for Mac Users
Mac
jConnect
Free
Efficient Office Suite for Enhanced Productivity
Web Apps
eFax - receive and send fax for iPhone or iPad
Free
Streamlined Faxing with eFax for iPhone
iOS
Hotsend
Free
Email Self-Viewing Formatted Documents with HotSend
Windows