You will rethink the industry standard VOIP benefits by using this featured SIP softphone. SIP is better than you may think! Stay connected with multiple SIP service providers to maximize your revenue.

Flexiblesoft Dialer is a Professional phone dialing system. Connect, Reconnect & Redial, and Disconnect from the Net easily, quickly, and even automatically.

Adore softphone delivers SIP-based communications and services for PC-to-Phone, Phone-to-PC and PC-to-PC services surrendering the world at your desktop.

Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP/ VOIP provider/ phone service. Easy to use interface to transfer, forward calls or set-up conference calls. Free download from http://www.3cx.com

Fax Boom: It is now possible to send faxes over Betamax SIP network. Fully-functional system for faxing over Internet in real time (FOIP). T38, FAX over G711, e-mail.

Our VoIP SIP SDK provides a powerful and highly customizable solution to quickly add SIP based dial and receive phone calls features in your software applications. It accelerates the development of SIP VOIP applications.

VoIP SIP SDK - A powerful and highly versatile VoIP SDK. Our SIP SDK provides a powerful and highly versatile solution to add quickly SIP (Session Initiation Protocol) based dial and receive phone calls features in your software applications.

VaxVoIP SIP SDK provides tools and components to quickly add SIP (Session Initiation Protocol) based IP-Telephony make and receive phone calls feature in your web pages and software applications. You can easily develope net-to-phone apps & web pages.