Best VoIP Software for Windows Vista

Software-based video conferencing server TrueConf Server is designed for group videoconferencing for up to 250 participants in the private networks (LAN/VPN) and over the Internet. Full HD (1080p) format is available. Video conferencing software...

mini SIP Server (100 clients) is a SIP Server or VOIP server for Windows system. mini SIP Server is based on the SIP standard which is an open standard. There are so many SIP phones (software or hardware), you can choose anyone you like without vendor...

Jitsi is an audio or video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, and Yahoo. Jitsi can encrypt your calls using the innovative ZRTP. Show you're desktop to anyone with a video-capable XMPP or SIP...

PC-Telephone allow to make pc-to-pc, pc-pc and cheap pc-to-phone, pc-phone, pc-to-fax, pc-fax, phone-to-pc, phone-pc, fax-to-pc, fax-pc, sip-phone, sip-to-phone calls over Internet or VoIP or ISDN or PSTN telephone networks. Use your computer as internet...

Echo cancellation and noise reduction for any soft-phone (e.g. Skype). It can also record your call. Removes noise from both directions and contains a robust echo canceller. Can automatically record your calls.What is new in this release:Version 1.7.55...

Advanced PBX Data Logger enables users to record, track and archive phone calls and can capture SMDR or CIR data from RS232, RS845, TCP ports and write real-time data to disk, ODBC databases, (MSSQL, or to other targets. The program can be integrated to...

mini SIP Server (50 clients) is a SIP Server or VOIP server for Windows system. mini SIP Server is based on the SIP standard which is an open standard. There are so many SIP phones (software or hardware), you can choose anyone you like without vendor lock...

VaxVoIP SIP SDK accelerates the development of SIP based webphone, softphone and IVR systems for Desktop OS and Mobile-Phones. Voice change support: VaxVoIP SIP SDK supports Voice Changer, which works in real-time and let you sound like a robot, a...

MizuPhone lets you make VoIP/SIP calls to users anywhere in the world using any VoIP service provider, SIP server or your own PBX. Features: -Easy to use, zero-touch configuration -Multiple profiles, multiple lines -Superior voice quality with audio...

Jitsi is an audio or video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, and Yahoo. Jitsi can encrypt your calls using the innovative ZRTP. Show you're desktop to anyone with a video-capable XMPP...