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VoIP H.323 SDK for .NET and ActiveX

VoIP H.323 SDK for .NET and ActiveX 1.0


VoIP H.323 SDK A powerful and highly versatile VoIP SDK to accelerate development of H.323 applications and websites. Lost no time and start a massive jump in development and a couple of new customers. Enjoy!

free download trial (7.65 Mb)


The easy-to-use and free sip messenger.

OfficeSIP Alerter 1.0


OfficeSIP Alerter is a simple, easy-to-use and free instant sip messenger. It was not designed for prolonged chat, it is handy when you need to send single message. It is good replacement for old-fashioned Alerter Service.

free download (661 Kb)


VaxVoIP SDK for VoIP call recording Server.

VaxVoIP SIP Recording SDK 8.0.4.0


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

free download trial (23.68 Mb)



PC-to-Phone/Fax/PC over Internet, ISDN or SIP

PC-Telephone Plus 7.0


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.

free download trial (1.43 Mb)


A powerful and intuitive VoIP SIP SDK

SIP VOIP SDK 3.6


Our VoIP SIP SDK provides a powerful and highly customizable solution to quickly add SIP based dial and receive phone calls features in your software applications. It accelerates the development of SIP VOIP applications.

free download trial (7.45 Mb)


PC-to-Phone/Fax/PC over Internet, ISDN or SIP

PC-Telephone 6.2


Make FREE pc-to-pc and cheap pc-to-phone, pc-to-fax, phone-to-pc, fax-to-pc, sip-phone, sip-to-phone calls over Internet or ISDN/PSTN telephone networks. Use your computer as internet telephone, USB phone, ISDN phone, fax, voicemail, callerID.

free download trial (1.32 Mb) :: order online ($35.00)



Billion Softswitch VoIP SIP/H323 proxy server

Billion Softswitch 3.0


Billion Softswitch VoIP SIP/H323 proxy server for Windows, Linux, FreeBSD. Billion Softswitch is a software system for intellectual proxy of signaling and media streams in the VoIP-networks based on SIP and H.323 protocols.

free download trial (8.47 Mb)


A powerful and intuitive VoIP SIP SDK

VoIP SIP SDK 3.0.11


Our VoIP SIP SDK provides a powerful and highly customizable solution to quickly add SIP based dial and receive phone calls features in your software applications. It accelerates the development of SIP VOIP applications.

free download trial (106 Kb)


Enigma is a free Session Initiation Protocol

Enigma Softphone 0.8.8


Enigma is a free Session Initiation Protocol (SIP) softphone available for your download. It can used to make Internet calls, establish conference and send instant messages to your buddies under the same SIP network. Choose your platform see features

free download (20.8 Mb)


VaxVoIP SIP Desktop SDK to develop softphone.

VaxVoIP SIP Desktop SDK 3.8


VaxVoIP SIP Desktop SDK provides tools and components to quickly add SIP (Session Initiation Protocol) based webphone, softphone and IVR systems for Desktop OS and Mobile-Phones.

free download trial (32 Mb)


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