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.

FreeConference.com offers free conference call solutions for you to connect through telephone or online with your customers, relatives or colleagues anywhere.

Grasshopper lets even small businesses develop a telephone dispatch system that can provide them with the tools they need to look professional and engage their customers more effectively.

LINE is a new communication app which allows you to make FREE voice calls and send FREE messages whenever and wherever you are, 24 hours a day!

Line2 is an inexpensive and convenient service that lets business owners and the self-employed set up a second line for their office easily.

Linphone is an open source SIP client for HD voice/video calls, 1-to-1 and group instant messaging, conference calls etc. Available for iOS, Android, Windows, macOS and GNU/Linux.

Affordable VOIP business phone service, toll free numbers and virtual pbx features starting under $10/month. View online or call 1-800-998-7087. Try our business voip service free.

Cloud phone systems to power business voice, SMS, and fax services. Online software for business VoIP solutions.

Zoiper, the free softphone to make VoIP calls through your PBX or favorite SIP provider. Available for iPhone, Android, Windows Phone 8, Windows, Mac and Linux.