This list of SIP software documents notable software applications which use Session Initiation Protocol (SIP) as a voice over IP (VoIP) protocol. Asterisk.

MicroSIP is a portable SIP softphone based on the PJSIP stack available for Microsoft Windows It facilitates high quality VoIP calls (p2p or on regular telephones) based on the open SIP protocol.

SIP allows you to make free phone calls over the world. Here's a list of the best free SIP clients CounterPath positions their free, entry-level app as an enticement for clients to purchase their more...

SIP client with graphical user interface built upon re/rem/baresip stack. Feature set is very limited, but whole project is self-contained and easy to compile - no external dependencies.

QuteCom Previously known as WengoPhone, Qutecom is a free, SIP compatible VoIP softphone initially developed by Wengo. Mercuro is an IMS client that could be used as SIP client.

Download Sip Client Software in title. ABTO Sofware offers custom HTML5 SIP Client development. Our HTML5 SIP Softphone solution is JavaScript softphone implementation on the basis of WebRTC.

. IPCOMMS SOFTPHONE. Simple and easy to configure with our services. (IPComms softphone is currently available for Android systems only. ). ZOIPER.

SIP Clients. Finding software can be overwhelming. We've helped thousands of businesses choose the right unified communications software so they can integrate communications and make calls.