Protocolo Sip

Zfone uses a new protocol called ZRTP, which is better than the other approaches to secure VoIP, because it achieves security without reliance on a PKI, key certification, trust models, certificate authorities, or key management complexity that bedevils the email encryption world. Zfone also... Platforms: *nix

The Wengophone is an easy to use program, that enables you to call anyone, anywhere, anytime, for free. Its native use of the SIP protocol makes it interoperable with most on the known VoIP technologies. WengoPhone already has built-in video capabilities, and is will offer many more features in... Platforms: *nix

Linphone is a web phone that it let you phone to your friends anywhere in the whole world, freely, simply by using the internet. The cost of the phone call is the cost that you spend connected to the internet. To call somebody, you must provide to linphone a SIP URL : It is something like... Platforms: *nix

Siproxd is a proxy/masquerading daemon for the SIP protocol. It handles registrations of SIP clients on a private IP network and performs rewriting of the SIP message bodies to make SIP connections work via an masquerading firewall (NAT). Siproxd project allows SIP software clients (like... Platforms: *nix

VoicePhone is a softphone to make international calls to fixed and mobile phones over the Internet. *** Working with several SIP providers *** Configurable rules to select appropriate SIP account based on the destination of a call A SIP provider may offer different cost of calls based on... Platforms: Windows

A multi-platform IAX and SIP softphone, compatible with the Asterisk platform and any SIP-capable system in general. It is available in Free and Biz editions. Zoper Free offers the following advanced features: - D?.38 fax receiving support (for SIP) - STUN support - Various codec support... Platforms: Mac

TekFax is a SIP T.38 Fax Receiver Server for Windows. TekFax tested on Microsoft Windows XP, Vista and Windows 2003 server. TekFax complies with RFC 3261. It supports ITU T.38 protocol and UPnP for NAT traversal. You can select IP address to be listened, default SIP proxy for outgouing calls.... Platforms: Windows

VoIPdito Hosted PBX allows your business be more productive without the expense of buying and managing on-site telephone system. All enterprise features at a small price. # Why VoIPdito? * Ease of use * Increased productivity * Instant deployment * Lower telecommunication costs * No upfront cost... Platforms: Windows

Ekiga (formely known as GnomeMeeting) is an open source SoftPhone, Video Conferencing and Instant Messenger application over the Internet. It supports HD sound quality and video up to DVD size and quality. It is interoperable with many other standard compliant softwares, hardwares and service... Platforms: Windows

Full featured VOIP softphone based on the open standard SIP protocol. With MizuPhone you can connect to any SIP (proxy and/or registrar) server on the public internet or on your local area network. MizuPhone tries to combine the SIP compatibility with P2P inteligence and an intuitive GUI. It is... Platforms: Windows

Blink is elegant, simple to use and feature-full Blink is the best SIP client for Mac. You can use it with any SIP provider or its own fully-featured SIP service. Blink is a fully featured and easy to use SIP client. Blink offers Rich Multimedia Communications based on SIP protocol using... Platforms: Mac

dore Softphone delivers SIP-based communications and services for PC-to-Phone and PC-to-PC services surrendering the world at your desktop. The Softphone allows a person to communicate over Internet with any desktops, notebooks, PDAs, stand-alone IP-phones and even with any conventional landline... Platforms: Windows

Blink is elegant, simple to use and feature-full You can use it with any SIP provider or its own fully-featured SIP service. Blink is a fully featured and easy to use SIP client. Blink offers Rich Multimedia Communications based on SIP protocol using Future Proof Addressing in the form of... Platforms: Linux

Ekiga (formely known as GnomeMeeting) is an open source SoftPhone, Video Conferencing and Instant Messenger application over the Internet. It supports HD sound quality and video up to DVD size and quality. It is interoperable with many other standard compliant softwares, hardwares and service... Platforms: Linux

CounterPath's X-Lite is the market's leading free SIP based softphone available for download. Combining voice and video calls, Instant Messaging and presence management in an intuitive and familiar interface, X-Lite helps you seamlessly transition from a traditional hard phone environment into... Platforms: Mac

Premium Features: 4 Lines,Call Recording,Hold / Unhold ,Transfer (Xfer),DND (Do not Disturb),Redial,Mute,Auto accept call,NAT/Firewall support STUN server Support ,ICE Support,Debug Mode (SIP message log),Codec Supported,G729, G711 u, G711 a, G722, GSM, iLbc, Speex/ 8000, Speex/16000 , Speex /... Platforms: Windows

Homer - Conferencing: is a free cross-platform SIP based video conferencing software. Platforms: Mac

nSIP is an RFC 3261 compliant implementation of SIP (Session Initiation Protocol) for .NET, written in C#. nSDP is an RFC 4566 compliant SDP parser also in C#, and can be used to make payloads to nSIP messages or to parse any SDP message. Platforms: Windows, Mac, Linux

A simple SIP and RTP NAT friendly proxy for SIP based VoIP Platforms: Windows, Mac, BSD, Linux

Web management interface for SIP Routing engine (OpenSER, Kamailio, SER, SIP-Router) - handle subscriber profiles, access control lists, accounting, least cost routing and load balancing, monitoring charts, xmlrpc communication with SIP server Platforms: Windows, Mac, Linux