Sip Servers
Peers v.0.3.1
A SIP User-Agent to help you communicate. Peers is a very simple softphone. It's a SIP User-Agent, written in java, it works on windows, linux and mac. It can be used with SIP servers like opensips or asterisk IPBX.
TekConSer v.1.3.1.0
TekIVR is a SIP (Based on RFC 3261) Interactive Voice System (IVR) runs under Windows. TekIVR tested on Microsoft Windows XP, Vista, Windows 7, and Windows 2003-2008 server. Please see installation requirements at Support section.
Asterisk Outlook Dialer v.1.08
The asterisk outlook dialer was born out of a need for a secure way to dial from MSOutlook via an asterisk server.
Vireo v.1.0
Vireo is a cross-platform SIP based enriched softphone and VoIP client for desktop computers.
Telepati SIP Phone Freeware
Telepati SIP Phone Freeware allows you to make PC-PC phone-phone calls over the Internet. Developed using Research Labs VOIP SIP Phone SDK, this free soft phone brings SIP protocol support for ActiveX. With this phone once you set the gatekeeper proxy
ZOIPER Free IAX and SIP softphone
ZOIPER 2.0 Free IAX and SIP is a user-friendly softphone, compatible with Asterisk or any other IAX or SIP capable system. High-quality VoIP calling experience with features like: IAX + SIP protocols, SIP over TCP/TLS/UDP(STUN support), Echo cancellation,
Interaction SIP Proxy v.4.0.1302
Interaction SIP Proxy performs day-to-day load balancing, and is inherently capable of performing business continuity and survivable remote site telephony (SRST) during disaster recovery.
SIP PBX v2 v.2 69
A Free Windows SIP PBX, with rich and powerful features like ACD(Automatic Call Distribution), Ring Group, Call Parking, Auto Attendant, Pickup Group, Conference, Auto-Dialer, Database CDR report, Database PBX Status Report, and much more.
PCBest Networks SIP PBX v.V2.01
A Windows free SIP IP PBX software. It is very easy to use and deploy, with powerful features like:ACD, Auto Attendant, Call Park, Ring Group, Conference, Call Pickup Group, Auto Outbound Dialer, Database CDR report, Database PBX Status Report.
X-Lite SIP VoIP Softphone v.4.0
CounterPath's X-Lite 3.0 is the market's leading free SIP based softphone available for download. Based on the advanced architecture of eyeBeam 1.5 (CounterPath's carrier grade telephony client),
Xtenn sip softphone
Xtenn softphone based on sip protocol helps to make call Pc to phone, pc to landline to international numbers at very cheap cost,I shows Balance,call timer, phone book, call history, Recharge options etc.
3CX SIP Proxy Manager v.9.0.14901.9
The SIP Proxy Tunnel can combine all SIP (signaling) and RTP (media) VoIP Packets from one location (typically a remote office) and deliver them to and from another location (typically the PBX Server) using a custom TCP protocol.