SIP Client Software    

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Avaya SIP Softphone: This SIP-enabled IP Softphone turns any PC into an office phone. This easy-to-use soft phone allows users to send encrypted instant messages, initiate 'click-to-talk' phone calls with contacts, show and view availability/phone status of users, and dial phone numbers listed on Web sites.  It dual protocol support of H.323 for telephony and SIP for presence and instant messaging provides organizations with the flexibility to gradually introduce SIP-based communications into their networks.
Learn more at Avaya.com >>> 

Avaya IP Agent:  Avaya IP Agent is a soft phone application that enables contact center agents to work from any PC, anywhere, as long as they can connect to your corporate network. Avaya IP Agent provides the complete set of sophisticated agent features from Avaya best-in-class suite of contact center products, plus an additional set of powerful capabilities including Instant Messaging and Click-to-dial.

Avaya IP Agent also introduces SIP-enabled presence into your call center, giving your agents the ability to access an expert for immediate help with the tough questions. Agents are able to provide requested information without having to transfer calls or schedule callbacks — one and done.  Delivering one-call resolution to more of your customers reduces costs while increasing customer satisfaction.

Learn more at Avaya.com >>>    

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Acrobits - Acrobits Softphone is a SIP softphone for the iPhone and iPod touch. Compatible with most SIP providers; it provides a bridge for SIP providers to reach iPhone customers.

Activaphone - ActivaPhone Softphone - SIP/IAX2 based Softphone for Windows. Available in free version with Open ports. Supports all major codecs; with multiple skin support

AdoreInfotech - Adore SoftPhone is designed with latest SIP technology; NAT module (so it can operate through NAT and Packet firewalls). It uses Compression Voice Codecs and bandwidth control module.

ageet Corporation - Offers AGEphone; an extremely small and light SIP Client software. Also provides business to business software solutions for VoIP related products; focussing on small-scale embedded systems.

Ahead Software - SIPPS SIP Client software: optimal sound quality, intuitive user interface, free registrar server

AimSoftwares - SIP Dialer is designed with latest SIP technology (SIP 2.0), NAT module (so it can operate easily through NAT and packet firewalls).  SIP Softphone. Support NAT traversal and band width control.

AlbaTalk - AlbaTalk sip

Amtelco - 1Call SIP Soft Console providing SIP based operator services for switchboard operators; including customizable script driven call processing; on-call scheduling; and presence driven call completion.

ANDROME - Intellivic Softphone - SIP based Softphone for Windows. Supports audio and video calls; as well as presence and instant messaging. Supports all major audio and video codecs. Based on Intellivic SDK.

Antepo - Enterprise IM Client For BlackBerry Wireless Handhelds. OPN System is the first and only EIM solution on the market to support interoperability between all XMPP and SIP/SIMPLE standards-based systems, enabling real-time communications across any IM network.

Anyuser - SIP Client for windows

Arcosoft Inc - New VoIP caller ID software; VONaLink ScreenPop; works with any VoIP phone system based on the SIP standard to provide screen pops and reject calls.

Beijing iPower Time Information Technologies Co., Ltd - our Sipper-II is a SIP supported soft video phone, supports video, voice, and IM services etc.

BetterDial - It is SIP calling software ! xD

BHARTI - SIP SOFT PHONE

Black Communications - A SIP Client Software for GSM BlackBerry mobile phones. It is current in beta and can be downloaded from our site.

BON.net - Babble - a complete soft client with instant messaging and outlook integration and centralised billing and payment functions

Brotecs Technology Limited - Brotecs’s SIP-based soft-phone runs on Windows & supports G.723; G.711; G.729; GSM; Transfer; Call Forward; Echo Cancellation and many more. It runs on WiFi; Cable; ASDL and even Dial-Up environments.

C2Call GmbH - Java based browser SIP soft client. Instant On-The-Go Web access for your SIP solution. Works with all Windows; MAC and Linux browsers without any software installation on users' PC!

Continuous Computing - Continuous Computing offers Trillium protocol software SIP UAs (SIP UA and SIP B2B UA). These offerings are compliant with industry standards; offer extensive APIs; and operate on all major OSs.

Corinex - User friendly Softphone from the Powerline technology leader. Can be used in combination with Corinex USB VoIP Phone. Preinstalled for most wanted free service providers.

Cornfed Systems LLC - The Cornfed SIP User Agent is a Session Initiation Protocol (SIP) based softphone for your IBM-compatible Personal Computer running the Linux operating system.

Critical Path - IM (instant messaging) application for wireless carriers and service providers.

CTL Inc. - Delivering SIP Integration Solutions for IP Telephony.
curibo-shop - German Vendor for SIP based VoIP Software

deltathree - SIP-Based PC-to-Phone Software

Dialogic - Dialogic Diva softIP- SIP allows any software application based on standard CAPI or the Dialogic Diva API programming interfaces to work with IP phones and soft phones in an IP telephony environment.

Duxoft - Private labeled; fully customizable SIP soft-phone with G.723.1; G 729; G 711 codecs. It works with Windows 98/Me/2000/XP/2003/Vista.

DyLogic Srl - Mirial SIP Softphone

EarthLink - SIP based VoIP and IM client. Free on-net calling. Download includes 30 free domestic minutes of PSTN calling.

Ecrio Inc - Instant Messaging and Presence Services (IMPS) handset software and communication servers

EICSS - Small foot-print ANSI-C SIP UAC for embedded devices. A DSP-based hardware reference design available for evaluation.

Encore Software Ltd. - SIP 3261 UA with Handset/SLIC manager, RTP/RTCP, DTMF-RFC 2833 and choice of codecs (G.7xx, G.168, GSM.AMR, QCELP13, EVRC, Selectable mode vocoder, VAD/CNG).

eStara - A customizable SIP software client.

Eyeball Networks - Eyeball Messenger is a standards based soft client that is SIP & XMPP compliant; providing full featured VoIP; video telephony; presence and instant messaging. IM with Yahoo; AOL; MSN & Google.

eyeP Media S.A - Highly customizable and seamlessly ingegrated SIP Softphones; also available as SDK. Proven Interoperability with large range of SIP platforms. Address Service Providers or solution integrators.

eZuce - Open SIP Communication. Architected to deliver the best UC Collaboration experience. eZuce adds value to your existing IP PBX by simplifying how you locate; communicate and connect. with users.

FaramTech - FaramPhone: Support SIP Audio&Video Call; Video Conference; Video mail; Record Video Clip to 3GP file

FaxBack Inc. - NET SatisFAXtion Port Server; Carrier-grade; real-time SIP T.38 VoIP fax solution with SDK. Scales to 672 ports in a single 1U rack mount system. Connects fax clients via HTTPS. Secure SSL faxing.

Floreat; Inc. - Floreat embedded software include SIP; T.38; T.30 with V.17; V.29; V.27ter; V.21ch.2 faxmodems; Terminal T.38; T.30 Fax Application with Tiff; Voice-Fax discrimination; integrated VoIP s/w engine; V.150.1

fring - fring enables users to make mVoIP (mobile VoIP) calls with any SIP provider even from non-SIP enabled phones.

F-ROUTE - SessionTalk SIP softphone for iPhone and iPod Touch. Compatible with any SIP provider or SIP PBX. Includes support for Transfer; Conferencing; Call recording and Call Forwarding.

Global Edge Software Limited - GlobalEdge is a Embedded Software Solutions and Services company; working on IP Networking Domain; with gSIP (3GPP./IETF) complaint SIP Stack; PacketCable and various other networking components.

Global IP Telecommunications Ltd - X-TAPI lite/Pro is a full-featured tapi-based softphone (SIP): Additional features: callto: ; sip2:; mobile use; dial rules (Pro); different languages available; DeveloperKit available

grnvoip - SIP Termination and Wholesale VoIP Provider

Grupo Engineerix S de; R.L de. CV - The Sip Client for Blackberry soft phone included with Software and License Key; i need to connect into my phone; Please Review the Software for Download.

Guo Wei - Delivering SIP Solutions for media education

Hampton Software Ltd - Articulation - SIP phone for PalmOS PDAs. Turns your Palm PDA into a WiFi phone (or a Bluetooth/EVDO/GPRS phone)

HCL Technologies Ltd - HCL SIP User Agent

Heiko Sommerfeldt - Phoner is a free SIP based softphone for Windows including an answering machine and TTS support.

Hellosoft - Hellosoft is leading SIP; IMS and VCC client vendor and has many commercial applications and IOTs with leading infrastructure vendors

Hivocal - SIP UA for PDA Win CE

Hughes Software Systems - 3261 compliant & customizable SIP User Agent Toolkit

IAP Company LImited - This SIP User Agent conforms to RFC 3261 and can be deployed in embedded and ubiquitous devices. This is especially optimized for T-Engine platform.

IBM - Lotus Sametime 2.5

Ind TeleSoft - Mobile SIP Suite - SIP infrastructure components for building multimedia applications

Inexbee - Mercuro IMS Client. SIP/3GPP/IMS and RCS compliant softphone.

Innovative Systems of Communication - First flash-based SIP softphone - make calls right from webpage; don't need to install anything

Interlancompu - SIP Softphone for mobile Nokia phones and Windows 7/Vista/XP PC's. Mobile Voip calls via Wi-Fi; 3G. Customized Skins; balance and integration telco services.

International Systems Research - SIP Softphone for PC, Notebook, and Mobile devices (PDA). High performance on narrow bandwidths. Customizable. SIP Stack also available. Japanese and English support.

Kapanga - Kapanga Softphone is the premier SIP client that delivers multicodec support for voice and video and T.38 fax communications in one single application.

M5T - The M5T SIP-UA SAFE component is an implementation of RFC 3261 – “Session Initiation Protocol” in a C++ framework for building advanced SIP applications.

Magenta - SIP client for android to connect with CUCM


MailVision Ltd. - Advanced SIP Communication Center. Voice; Video and IM. Multiple Accounts ( SIP Providers) NAT Traversal, Call Forward ( Busy; No Answer; Unconditional ), Message Waiting Indicator.

Mediaring VoizBridge - SIP B2BUA (Back to Back User Agent) for NAT Traversal and Topology Hiding (Wholesale carrier networks).

Microsoft - Windows Messenger

Microsoft Portrait - a research prototype for mobile video communication.

MIP Telecom - Development tool kit for UA applications

Mirial - Mirial Softphone (SIP/h323) for HD and SD video conferencing and desktop telepresence - Compliant with major communication standards - Featuring 3-party video calls; recording/exporting capabilities

MizuTech - Professional full featured SIP Softphone windows desktop application for business users

Morodo Group Limited - MO-Call SIP is a mobile app that will work on almost any phone. When you switch it on; you can route your calls over the Morodo Network to save up to 95% on international calls & SMS.

NCH SwiftSound - Express Talk - Free. Call anyone on the internet who has Express Talk (or any other SIP voip softphone). Dat compression; on-hold; call transfer; supports 4 lines; call ID display and call recording.

Nero AG - SIPPS is a SIP compliant softphone. It is available as business phone and OEM software for ISPs, ITSPs and Carriers. 

NetCODEC - Bluetooth Based Mobile Handset; Video Telephone; RFC 3261 Support; Telephony Supplementary Service Support.

NewHeights Software - Desktop Assistant(TM) applications are used to create customer-branded, Personal Communication Management (PCM) software products that add value to CPE telephony equipment and hosted telephony services.

NGC Systems Sdn Bhd - Genico™ LiveContact; a SIP-compliant user client with VoIP; videocalls; multi-party conferencing; IP Centrex call features; file transfer; IM; presence; whiteboard & application sharing...

Nine-9s - SIP source code toolkit for implementing embedded systems. Small ROM and RAM footprint; high performance stack. Written by embedded systems engineers for embedded engineers.

NMS Communications - NMS's SIP-based Mobile IMS Client delivers end-to-end client application solutions with next-generation features & services; including Active Phone Book and Mobile Video Sharing.

Novell - GroupWise IM client will support the proposed Session Initiation Protocol (SIP) and SIP for Instant Messaging and Presence (SIMPLE) instant messaging standards.

Null Team - Yate can be used as a softphone for H.323; SIP; and IAX under Windows and Linux for free. It can also integrate a browser to build callcenters.

Nuvoiz Inc. - Nuvoiz provides SIP and XMPP based; WiMAX/WiFi enabled SoftPhone products with extensive NAT/NAPT/FireWall traversal capabilities.

OfficeSIP Communications - Freeware SIP voice & video softphone and instant messenger for Windows.

optimalVOICE Technologies GmbH - Voizilla Softphone SIP

Packetway, Inc. - PEERiX : SIP Phone Framework based on Packetway\'s SIP/SDP/RTP/RTCP Stack

Pangean Technologies - REACT provides instant voice communications and features like to presence, recording, intercom, broadcast, hoot and holler, Instant Messaging (IM), push to talk and ad-hoc conference.

Paradial - Paradial RealSIP IM SIP client

PCBest Network - PCBest Network provides SIP solutions for business. Its SIP SDK is very powerful; stable and easy to use. It can be used to develop SIP softphone or SIP server applications. Free to download and try.

PhoneGaim - Instant Messenger software that lets you use your computer to make phone calls to all of your Instant Message Buddies on any service (AOL, MSN, ICQ, and Yahoo!) for free.  If you buy SIP Minutes, you can also call any standard phone or mobile phone in the world at great rates.

Pingtel - SIP-based IP Softphone

Polypix Inc - SIP UA for PC, PDA, Linux. Supported voice codec - G.711, G.723.1, G.729.A. Supported video codec - H.263 ( QCIF, CIF, QVGA, QSIF )

PortSIP Solutions; Inc. - Pangolin is the newest free softphone from PortSIP; it's built base on PortSIP VoIP SDK; allowing users to enjoy multimedia communications in a dynamic way.

pyro - We are planing to give the buddies presence infemation using openser as sip proxy server. and call routing dirct calls and voice mail calls and routing for CRBT. using mysql database as well as daimet

QUINTUM Technologies - Tenor VoIP MultiPath Switches:Complete risk-free, patented VoIP solutions

Securax - ZOIPER 2.0 Free Edition is a user-friendly feature-rich SIP and IAX softphone; compatible with the Asterisk platform or any other SIP or IAX capable system.

Servonic - Voice over IP Client

SESCA Innovations Oy - Click to Call solution with SIP based IP Sofphone.

Shaw Cable - Shaw Messenger is a SIP client that connects you to other Shaw Internet users. Its features include text messaging, voice/video conferencing, file transfer, and more.

SIPMethod User Agent Toolkit - SIPMethod U/A Toolkit offers a simple event/listener Java API for SIP endpoint applications. Supports: RFC 2976; RFC 3261; RFC 3263; RFC 3265; RFC 3428; RFC 3525; RFC 3566.

SIPphone - PhoneGaim is an IM client that enables seemless instant messaging and SIP based voice chat. PhoneGaim is designed to interface with the SIPphone system, and users can assign virtual numbers / custom numbers and purchase minutes all associated with their IM client.

SIPquest Inc. - SIPquest offers the richest portfolio of SIP-based soft clients enabling Fixed to Mobile convergence with an evolution to IMS.

SIP Response - SIP Based Personal Call Center and Softphone. Supports commercial softphone accounts; such as Vonage; or can be used with your coporate SIP PBX.

SipTelecom - AdiPhone - SIP Soft Phone Allow people to receive calls from their web site.  Supports NAT; STUN; whiteboard and desktop collaboration. For windows environment.

SpeedVoIP Communication Technology Co.; Ltd - For political & economic reasons; ISP may block VoIP in your country. To protect your VoIP business & profit; SpeedVoIP provides patent Security SIP Softphone/Dialer; which circumvent VoIP blockage.

Sprint - Sprint Enterprise IM.

Stratasoft Inc. - StrataSIP(TM), a soft phone which will allow agents to connect voice calls processed by the StrataDial(R).VC2(TM), its flagship contact center product, over the Internet.

Tablet Media - H.323 and SIP standards-compliant client applications for communications and messaging.

Talking Technologies - The EN-PDA Softphone is a state-of-the-art SIP/H.323 softphone that can handle outgoing as well as incoming phone calls from any Pocket PC.

Tata Elxsi Ltd - We have a portable SIP stack with all the latest compliance to RFCs. We also market the VoIP phone and gateway server architecture.

TekIVR - TekIVR is a SIP Interactive Voice System (IVR) which provides "Call Attendant" function (Based on RFC 3261) runs under Windows.

TelcoBlue - PC to phone software

TeleSoft International - CompactSIP UA - smallest footprint Source Code stack with support for WM 6.0; XP; VISTA; Symbian; Nucleus; VxWorks; Linux & GIPS VoiceEngine. Modular solution supports 45 RFCs and uses only 0.1 MIP.

Telia - Telia Messenger

Teligent - The Teligent SoftPhone is Outlook integrated and supports multiple calls and Hifi sound codecs

Total Sanity Solutions Inc - Total Sanity Solutions is now offering a complete desktop integration package for it SIP based IP/PBX solution. Not web based but client side application wirtten in .NET to run on most systems.

Trinity Convergence - The hi-fidelity VeriCall Edge software delivers a SIP software client that fully integrates all of the media processing and packet handling software required to develop voice and video over IP devices

Twinkle - SIP based softphone for Linux. Easily integrates with KAddressbook.

Uniebiz Co.; ltd - SIP Can use with window mobile; Window XP and the lastest; Iphone; Ipad ; Mac os

Unicorn Software and Solutions - Smart Dialer is a windows based commercial SIP client software with g.723.1 and optional g.729 codec support. Customized skin is available on client request.

VoipSwitch - SIP link uses a highly compressed G729, G723.1, iLBC, GSM Codecs ensuring high voice quality even for low speed internet links.

Wave Three Software - PC/Mac interoperable software for Video, Voice and data collaboration

Wipro - Fully RFC3261 compliant SIP Stack and UA

Xten Networks, Inc - SIP-based softphone for Windows PCs & Wireless PocketPC/CE devices gives power and flexibility to deliver an enhanced VOIP endpoint.

Yasin KAPLAN - SipCli is a command line SIP user agent runs under Windows which enables making SIP (Based on RFC 3261) based calls.

Yelet Inc - With support for Windows and Windows CE powered personal digital assistants, YeLet's SIP softphones can be more easily deployed by your customers than those from any other softphone vendor.

Zentrum - Customer Relationship Management

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