Free Downloads: Open Source Sip Telephone Software

Make FREE pc-to-pc, cheap pc-to-phone, pc-to-fax, phone-to-pc, fax-to-pc, SIP-phone calls over Internet or ISDN/PSTN telephone networks. Use your computer as internet telephone, USB phone, SIP telephone, ISDN phone, FAX, Voicemail.

Make FREE 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-Telephone, Sip-to-phone calls over Internet/VoIP or ISDN/PSTN Telephone networks. Use your computer as internet Telephone, USB phone, USB handset, ISDN Telephone, ISDN fax, answer phone, fax Software, voicemail, caller ID,...

Category: Internet / Communications
Publisher: Selectra Ltd, License: Shareware, Price: USD $35.00, EUR35, File Size: 1.3 MB
Platform: Windows

VaxTele SIP Server SDK allows software vendors and service providers to develop their own SIP based VoIP Server, IP-PBX, SIP PBX, SIP gateway and IP-Telephony services.

VaxTele Sip Server SDK (Software Development Kit) is a new and flexible approach to develop Sip based VoIP servers, IP-PBX, Sip gateways, Sip PBX. It is really easy to develop IP-Telephony, PC to PC and PC to Phone services by using VaxTele Sip Server SDK. VaxTele Sip Server SDK includes COM (Component Object Model) components, and can be used in...

Category: Software Development / Components & Libraries
Publisher: VaxSoft, License: Shareware, Price: USD $550.00, File Size: 12.3 MB
Platform: Windows

Express Talk is software that works like a telephone to let you make calls from your PC. With Express Talk you can call anyone on the internet who has installed Express Talk (or any other SIP voip softphone). Calls are free.

The Express Talk softphone works like a Telephone to let you make calls through your computer and you can call anyone via the internet who has installed it (or any other Sip softphone). Connect your webcam or other video device and you can see and speak to family, friends and colleagues around the world. Calls computer to computer are always free. You can also call ordinary 'real'...

Category: Internet / Internet Phone and Teleconferencing
Publisher: NCH Software, License: Shareware, Price: USD $49.99, File Size: 641.1 KB
Platform: Windows

PCBest Network provides SIP solutions for SIP Developers.

PCBest Network provides Sip solutions for Sip Developers. From high level Sip ActiveX to low level Sip SDK, the complete Sip development solutions are giving users multipul choices to deploy their voip productions in fastest and most efficient way. PCBest Network's Sip SDK can be used to develop Sip clients or Servers(proxy, media gateway, PBX,...

Category: Software Development / ActiveX
Publisher: PCBest Network, License: Shareware, Price: USD $19.99, File Size: 1.6 MB
Platform: Windows

WebRTC SIP is a gateway to convert WebRTC calls from browsers to SIP and inverse turning your browser into a regular softphone.

WebRTC Sip is a gateway to convert WebRTC calls from browsers to Sip and inverse turning your browser into a phone with audio, video and SMS capabilities. The gateway allows your web browser to make and receive calls from/to any Sip-legacy network or PSTN for example call to X-Lite or any mobile/landline phone. The supported protocols includes WebRTC, Sip,...

Category: Business & Finance / Business Finance
Publisher: Mizutech S.R.L, License: Shareware, Price: USD $1900.00, USD1900, File Size: 25.0 MB
Platform: Windows

Doddle is a free online SIP WebPhone through
which you can make phone calls from within a
webpage.

Doddle is a free online Sip WebPhone through
which you can make phone calls from within a
webpage.
It works with couple of VoIP providers or you can
even fill it with your own Sip settings details.
There is no desktop Software to be downloaded at
all. It just uses Java plugin( JVM ) which by
default exists is most browsers. Asterisk (News -...

Category: Internet / Communications
Publisher: Doddle WebPhone, License: Freeware, Price: USD $0.00, File Size: 564.0 KB
Platform: Windows, Linux

Uplink connects SIP protocol VoIP calls to the proprietary Skype phone network. It works in both directions.

Uplink connects Sip protocol VoIP calls to the proprietary Skype phone network. It works in both directions. The Sip protocol has become the industry standard for VoIP. Thousands of Telephone companies, IP phone manufacturers and virtual IP based PBX systems use this protocol to connect calls. The problem is the proprietary IP phone 'Skype' has an almost cult following in...

Category: Internet
Publisher: NCH Swift Sound Software, License: Shareware, Price: USD $27.50, File Size: 238.3 KB
Platform: Windows, ME, NT 4.x, XP, 2000, 2003, Vista

Description:Siphome classic is a tariff for a VOIP-call-back-button for one´s own website.

Description:Siphome classic is a tariff for a VOIP-call-back-button for one´s own website. Features:Outgoing calls to other Sip-and IAX-addresses the Sip-and IAX-address will be transfered standardly as well as the name-alternatively anonymous. With calls, which are terminated into the fixed line line network the transmitted Telephone number is principally anonymous...

Category: Internet / SMS
Publisher: SiPHelp, License: Freeware, Price: USD $0.00, File Size: 583.7 KB
Platform: Windows

Kapanga Softphone is a powerful and unique SIP software telephone that lets users make phone and video calls as well as send/receive fax from one single software application using any Voice over IP (VoIP) telephony provider.

Kapanga Softphone is a powerful and unique Sip Software Telephone that lets users make phone and video calls as well as send/receive fax from one single Software application using any Voice over IP (VoIP) telephony provider.
As a fully featured Sip client, Kapanga Softphone is designed from the ground up to work with current and future IP-based...

Category: Internet / Communications
Publisher: Ecotronics Ventures LLC, License: Freeware, Price: USD $0.00, File Size: 13.4 MB
Platform: Windows

Carousel is software to connect VoIP calls to ordinary telephone lines and vice versa using one of a number of professional telephony devices.

Carousel is Software to connect VoIP calls to ordinary Telephone lines and vice versa using one of a number of professional telephony devices. It works as a virtual FXO gateway. You install it as a service on any Windows PC. Sip protocol VoIP calls will be directed out to standard PSTN analog lines through a telephony board. Typical Applications: ~ To create a 1 to 12 FXO...

Category: Internet / SMS
Publisher: NCH Swift Sound Software, License: Freeware, Price: USD $0.00, File Size: 210.0 KB
Platform: Windows

Express Talk is software that works like a telephone to let you make calls from your PC. With Express Talk you can call anyone on the internet who has installed Express Talk (or any other SIP voip softphone). Calls are free.

The Express Talk softphone works like a Telephone to let you make calls through your computer and you can call anyone via the internet who has installed it (or any other Sip softphone). Connect your webcam or other video device and you can see and speak to family, friends and colleagues around the world. Calls computer to computer are always free. You can also call ordinary...

Category: Business & Finance / Business Finance
Publisher: NCH Software, License: Shareware, Price: USD $49.99, File Size: 684.5 KB
Platform: Windows

Express Talk is software that works like a telephone to let you make calls from your PC. With Express Talk you can call anyone on the internet who has installed Express Talk (or any other SIP voip softphone). Calls are free.

The Express Talk softphone works like a Telephone to let you make calls through your computer and you can call anyone via the internet who has installed it (or any other Sip softphone). Connect your webcam or other video device and you can see and speak to family, friends and colleagues around the world. Calls computer to computer are always free. You can also call ordinary...

Category: Business & Finance / Business Finance
Publisher: NCH Software, License: Freeware, Price: USD $0.00, File Size: 684.5 KB
Platform: Windows

iFone-VNN is an Internet phone service of Vietnam Posts and Telecommunications Corporation (VNPT), developed by SIP technology (Session Initiation Protocol) which uses whole or a part of public Internet to establish calls between telephone, personal

iFone-VNN is an Internet phone service of Vietnam Posts and Telecommunications Corporation (VNPT), developed by Sip technology (Session Initiation Protocol) which uses whole or a part of public Internet to establish calls between Telephone, personal computer (PC) and other terminal equipments.

Category: Internet / Communications
Publisher: Vietnam Datacommunication Company, License: Freeware, Price: USD $0.00, File Size: 4.8 MB
Platform: Windows

VoIP SIP SDK for iOS (iPhone and iPad) is a toolkit to quickly build SIP softphone client for iOS or add VoIP features into your app for App Store.

VoIP Sip SDK for iOS (iPhone and iPad) is a toolkit to quickly build Sip softphone client for iOS or add VoIP features into your app for App Store. Operating System: Mac OS X. Development environments: VOIP Sip SDK for iPhone on objective-C (Xcode); VOIP Sip SDK for iPhone on Swift. iOS versions: VoIP Sip SDK for iOS 6;...

Category: Internet / Communications
Publisher: ABTO Software, License: Shareware, Price: USD $995.00, File Size: 106.0 KB
Platform: Mac, iOS, iPhone, iPod

IVM answering attendant software is a complete voicemail, call attendant, interactive voice response, or autodial telephone management solution for small to medium businesses.

IVM answering attendant Software is a complete voicemail, call attendant, interactive voice response, or autodial Telephone management solution for small to medium businesses. IVM can be used for a wide range of solutions from a simple computer answering machine to running a sophisticated Telephone interactive response system. Just run the install file and IVM will be ready...

Category: Internet / Internet Phone and Teleconferencing
Publisher: NCH Software, License: Shareware, Price: USD $69.95, File Size: 1.4 MB
Platform: Windows

Fax Voip Softphone - SIP/H.323 software telephone. Call Recording. Playing audio messages into the telephone line. Sending and Receiving T.38 and Audio Faxes. Music on Hold. Call Transfer. Call Forwarding. Phone Book. Log Book. Random Phone Calls.

Fax Voip Softphone is a powerful and unique Sip / H.323 Software Telephone that lets users make phone calls, record calls, play audio files into the Telephone line as well as send/receive T.38 and audio faxes from one single Software application using any Voice over IP (VoIP) telephony provider. Fax Voip Softphone supports Music on Hold, Call Transfer and Call...

Category: Business & Finance / Fax Software
Publisher: FaxVoip Software, License: Shareware, Price: USD $90.00, File Size: 49.6 MB
Platform: Windows

ENUMresolver is a freeware program designed to query your default DNS for the ENUM NAPTR mapping between a telephone number and a SIP, H323, IAX2 or other URI.

ENUMresolver is a freeware program designed to query your default DNS for the ENUM NAPTR mapping between a Telephone number and a Sip, H323, IAX2 or other URI. Use with VOIP systems to check your e.164 or freenum or other mappings.

This program queries each default DNS assigned to your system using the e164.arpa or other root tree for the corresponding NAPTR records...

Category: Internet / Web Search Utilities
Publisher: NWPS, Inc., License: Freeware, Price: USD $0.00, File Size: 439.9 KB
Platform: Windows

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. Tested and works with 75% of the providers.

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 with the username and password from your providers, you can connect and start speaking with anyone on the internet. Now VOIP...

Category: Software Development
Publisher: Research Lab Inc, License: Freeware, Price: USD $0.00, File Size: 1.4 MB
Platform: Windows, Pocket PC, Palm, Symbian, Handheld/Mobile Other

The Source code of the play Tanks for mobile telephone.

The Source code of the play Tanks for mobile Telephone. The Project is executed for model of the Telephone Siemens M55. Project was run for J2ME for MIDP-1.0 and CLDC-1.0.

Category: Software Development / Misc. Programming
Publisher: Kruchinin Aleksandr, License: Freeware, Price: USD $0.00, File Size: 202.0 KB
Platform: Windows

Video VoIP SIP SDK for iPhone is a solution to quickly build VoIP softphone that can dial and receive calls on your computer or add VoIP features into your software.

Video VoIP Sip SDK for iPhone is a solution to quickly build VoIP softphone that can dial and receive calls on your computer or add VoIP features into your Software. Quick facts about VoIP Sip SDK for iPhone: iOS 5/6 compatible Support of Sip and RTP STUN and other IETF standards (compatible with SER, OpenSER and Asterisk) Sip...

Category: Internet / Communications
Publisher: ABTO Software, License: Shareware, Price: USD $495.00, File Size: 106.0 KB
Platform: iOS, iPhone

The Mizu WebPhone is a SIP standard based VoIP software for Web implementing multiple engines: Native, WebRTC, Flash, Java and App. Web to SIP from all OS, all browsers.

Web to Sip for all OS, all browsers. The Mizu WebPhone is a Sip standard based VoIP Software for web implementing multiple engines: Native, WebRTC, Flash, Java and App. Based on the industry standard Sip protocol, it is compatible with all VOIP devices and services. It can call any other Sip soft phone (for free charge) or any landline or mobile number...

Category: Software Development
Publisher: Mizutech S.R.L, License: Demo, Price: USD $500.00, USD500, File Size: 8.4 MB
Platform: Windows, Mac, Linux, iOS, Android, BlackBerry, Handheld/Mobile Other, OpenVMS, Unix, Other, iPhone, iPod, Java

SIP Workbench is a graphical SIP, RTP, STUN, and TURN protocol analyzer and viewer designed to help illustrate and correlate VoIP and IM network interactions.

Sip Workbench is a graphical Sip, RTP, STUN, and TURN protocol analyzer and viewer designed to help illustrate and correlate VoIP and IM network interactions. Sip Workbench is a versatile tool designed for protocol developers, system integrators, and end-users to use to visualize, diagnose, and debug complex multi-protocol interactions.

Sip Workbench...

Category: Internet / Communications
Publisher: BreakPoint Software, License: Shareware, Price: USD $89.95, File Size: 3.3 MB
Platform: Windows

SIP Phone DLL allows to make PC-PC, PC-phone, or phone-phone calls or create Instant Messaging (IM) sessions over the Internet VOIP SIP Phone SDK brings protocol support for ActiveX. With this SDK one can create a simple web site voip service.

Sip Phone DLL allows to make PC-PC, PC-phone, or phone-phone calls or create Instant Messaging (IM) sessions over the Internet VOIP Sip Phone SDK brings protocol support for ActiveX. With this SDK one can create a simple program to connect and start speaking with anyone with a direct IP Address (provided no NAT Router or Firewall is set) or use the Gateway or the Gatekeeper to...

Category: Software Development
Publisher: Research Lab Inc, License: Shareware, Price: USD $399.00, File Size: 3.0 MB
Platform: Windows, Pocket PC, Symbian

Data Phone is data aware VOIP application which uses the industry standard Session Initiation Protocol (SIP). Data Phone integrates phone functionality with MS SQL databases or Windows Azure cloud services, allowing you to easily interface telephony

Data Phone is data aware VOIP application which uses the industry standard Session Initiation Protocol (Sip). Data Phone integrates phone functionality with MS SQL databases or Windows Azure cloud services, allowing you to easily interface telephony functions into your other systems. To get started: 1. Download Data Phone 2.Enter account information 3.Make a call. Fully...

Category: Internet / Communications
Publisher: EXNP Inc., License: Shareware, Price: USD $79.95, File Size: 61.2 MB
Platform: Windows

The snom 4S media server is a turnkey solution for handling media in SIP environments.

The snom 4S media server is a turnkey solution for handling media in Sip environments. Using the Sip
protocol the media server can be used with Software solutions like Microsoft Messenger or with a variety of hard phones like the snom 100 and 200.
The media server can be used with the snom 4S Sip Proxy/ Registrar as well as with other Sip proxies,...

Category: Utilities / Misc. Utilities
Publisher: snom technology AG a€“ VoIP Phones, License: Demo, Price: USD $0.00, File Size: 1.8 MB
Platform: Windows