Free Downloads: Sip Telephony

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

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

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

Easy to use VoIP softphone with profile and contact management.

PhonerLite is a clearly arranged and easy to used application for Windows. PhonerLite enables your PC to use it for internet Telephony (VoIP, Voice over IP). Pre-conditions are a full-duplex sound card, a microphone and speakers (alternatively a headset), an internet connection and a registration at a provider supporting the protocol Sip. PhonerLite supports several Sip...

Category: Internet
Publisher: Heiko Sommerfeldt, License: Freeware, Price: USD $0.00, File Size: 2.4 MB
Platform: Windows

This is a small Softphone application developed only for use with the Snapcalls VoIP telephony Service (won't work as a SIP client or with any other service provider) this service includes international dialing, ring callback, web callback, and

This is a small Softphone application developed only for use with the Snapcalls VoIP Telephony Service (won't work as a Sip client or with any other service provider) this service includes international dialing, ring callback, web callback, and SMS callback. In order to use it, a paid account is required, but can't get one from Snapcalls website, so you will have to...

Category: Internet / Communications
Publisher: SnapCalls, License: Freeware, Price: USD $0.00, File Size: 1.7 MB
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 communications systems...

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

VaxVoIP SIP SDK provides tools and components to quickly add SIP (Session Initiation Protocol) based IP-Telephony make and receive phone calls feature in your web pages and software applications. You can easily develope net-to-phone apps & web pages.

VaxVoIP Sip SDK provides tools and components to quickly add Sip (Session Initiation Protocol) based IP-Telephony make and receive phone calls feature in your web pages and software applications. It accelerates the development of Sip based soft phone with your own GUI (graphical user interface) and brand name. It delivers superior voice quality by integrating...

Category: Software Development
Publisher: VaxSoft Inc, License: Shareware, Price: USD $1500.00, File Size: 7.3 MB
Platform: Windows

VaxVoIP SIP Server SDK is a new, flexible approach that combines several advanced features, enabling users to create their own VoIP Server and IP PBX systems

VaxVoIP Server SDK provides tools, demo application, sample codes and software components to accelerate the development of Sip (Session Initiation Protocol) based VoIP Servers and IP PBX systems for Banking, calling card companies, call centers and long distance Telephony companies. HIGHLY CUSTOMIZABLE SOLUTION VaxVoIP Server SDK (Software Development Kit). It contains sample...

Category: Internet / Communications
Publisher: VaxSoft, License: Shareware, Price: USD $840.00, File Size: 28.8 MB
Platform: Windows

Embedded Windows CE VOIP Developers Kit is your embedded telephony solution for developing software/hardware to enable device to device phone calls using SIP/H323 phone right at the electronics level.

Embedded Windows CE VOIP Developers Kit is your embedded Telephony solution for developing software/hardware to enable device to device phone calls using Sip/H323 phone right at the electronics level. The design is based on Hybrid Combination of RFC Sip Protocol and Windows RTC and is today successfully ported to Windows CE/Pocket PC/Smart Phone. With a memory overhead...

Category: Internet
Publisher: Research Lab Inc, License: Demo, Price: USD $799.00, File Size: 2.4 MB
Platform: Windows, Pocket PC, Palm, Symbian

You need a VoipAlot username and password in order to call via network.

You need a VoipAlot username and password in order to call via network. VoipAlot will work with every Sip device or Sip software. VoipAlot is a Telephony client that allows you to make calls from your PC. VoipAlot offers a simple tool for Symbian users to make Cheap phone calls.

Category: Internet / Communications
Publisher: voipalot, License: Freeware, Price: USD $0.00, File Size: 4.9 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

TekSIP is a SIP Registrar/Proxy for Windows.

TekSIP is a Sip Registrar and Proxy. TekSIP tested on Microsoft Windows XP, Vista, Windows 7, and Windows 2003/2008 server. TekSIP complies with RFC 3261, RFC 3263, RFC 3311, RFC 3581 and RFC 3891. It supports NAT traversal, UPnP and ENUM. Please see technical details about NAT traversal in Readme.txt. You can select IP address to be listened, alternative Sip routes for outgouing...

Category: Internet / Dial-up & Connectivity
Publisher: KaplanSoft, License: Shareware, Price: USD $185.00, File Size: 3.1 MB
Platform: Windows

VaxVoIP Recording SDK offers a new, flexible approach that integrates multiple advanced features, empowering users to create their own VoIP Call Recording Server.

VaxVoIP Sip SDK gives you important tools and software to create, set up, and adjust VoIP call recording systems that use Sip. You can download example apps and code to help you understand how to do it. VaxVoIP Call Recording Sip SDK includes tools, demo applications, sample code, and software components to speed up the development of Sip (Session Initiation...

Category: Internet / Communications
Publisher: VaxSoft, License: Shareware, Price: USD $1280.00, File Size: 23.7 MB
Platform: Windows

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

Phoner is a free softphone for ISDN and VoIP telephony. An answering machine and Text-To-Speech support complete the large package.

Phoner is a free softphone for ISDN and VoIP telephony. An answering machine and Text-To-Speech support complete the large package.

Category: Internet
Publisher: Heiko Sommerfeldt, License: Freeware, Price: USD $0.00, File Size: 2.6 MB
Platform: Windows

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....

Category: Internet / Communications
Publisher: EXNP Inc., License: Shareware, Price: USD $79.95, File Size: 61.2 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: Business & Finance / Business Finance
Publisher: NCH Software, License: Shareware, Price: USD $49.99, File Size: 684.5 KB
Platform: Windows

"VidPhone" is a H.

"VidPhone" is a H.323/Sip Video SoftPhone for Windows and Linux OS.
VidPhone support both Sip and H.323 protocols, varios audio codecs and high-definition video.

VidPhone has following features and parameters:

- Protocols: Sip and H.323
- Audio codecs: G.711/G.729/Speex/iLBC/G.723.1/GSM/G.726
- Video codecs:...

Category: Internet / Communications
Publisher: RSDevs.com, License: Shareware, Price: USD $40.00, File Size: 8.9 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

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

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

Voolyk Sip Server is a mature and flexible SIP server (RFC3261). It can be used on systems with limited resources as well as on carrier grade servers, scaling to up to thousands call setups per second.

Voolyk Sip Server is a mature and flexible Sip server (RFC3261). It can be used on systems with limited resources as well as on carrier grade servers, scaling to up to thousands call setups per second. It is written in pure C for Unix/Linux-like systems with architecture specific optimizations to offer high performances.

Category: Software Development / ActiveX
Publisher: Voolyk, License: Commercial, Price: USD $499.00, File Size: 1.2 MB
Platform: Windows

The MLB SIP Load Balancer is used to load balance SIP services, to achieve performance scalability and high availability of the SIP services.

The MLB Sip Load Balancer is used to load balance Sip services, to achieve performance scalability and high availability of the Sip services. MLB is a fast Sip proxy application capable to handle millions of simultaneous calls and will provide traffic routing based on server load. The Sip Load Balancers automatically detect when a server is unavailable...

Category: Software Development / Databases & Networks
Publisher: Mizutech S.R.L, License: Shareware, Price: USD $3800.00, USD3800, File Size: 7.3 MB
Platform: Windows