Line2 - Line2 adds a second phone number or complete cloud business phone system to smartphones & computers that's robust yet affordable. Buy online or get a custom quote.
CALLR - CALLR is an extremely helpful app for those who have to deal with call control protocols for their business. You can create a customized call control system that will perform a wide range of functions.
Phone.com - VOIP Business Phone Service + Virtual PBX
MeetingMogul - Join any conference call with one-touch
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
CamCard - CamCard reads business cards and save instantly to phone Contacts.