Software: Sip

Uplink Skype to Sip Adapter v1.00NCH Swift Sound

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 ...

Uplink Skype to Sip Adapter v1.00 by NCH Swift Sound
Platform: WindowsNetwork & Internet- Other
License: FreewareSize: 244.0 KBReleased: 20 May, 2009
SIP PBX v2 2.6PC Best Networks

A Free Windows SIP PBX, with rich and powerful features like ACD(Automatic Call Distribution), Ring Group, Call Parking, Auto Attendant, Pickup Group, Conference, Auto-Dialer, Database CDR report, Database PBX Status Report, and much more. You can set up your own call-center in just a few of minutes. Support Plugin now. Customize your IVR menu by C# ...

Platform: WindowsDevelopment- Other
License: FreewareSize: 4.8 MBReleased: 11 May, 2012
StarTrinity SIP Tester

SIP tester is a free VoIP load testing tool which enables you to test VoIP network, SIP software or hardware. It is able to simulate thousands of simultaneous incoming and outgoing SIP calls with RTP media, analyze call quality and build real time reports. Call flow is specified by CallXML script where one can design various situations which can cause ...

StarTrinity SIP Tester 3.1 by
Platform: Windows,  WinXP,  Windows2003Network & Internet- Other
License: FreewareSize: 3.8 MBReleased: 26 June, 2013
Sip - Voip - Performance - Test
ABTO Software VoIP Video SIP SDK 4.7ABTO Software

Quick facts about ABTO Software VoIP Video SIP SDK for Windows:

License Details

No yearly/monthly fee
No limitation for number of users, channels, or products
Protocols Support

Development Features

ActiveX, COM, and plain dll files
NAT support
Encryption ...

ABTO Software VoIP Video SIP SDK 4.7 by ABTO Software
Platform: Windows,  Windows 8,  Windows CE,  Windows MobileCommunications- Telephony
License: SharewareSize: 106.4 KBReleased: 05 June, 2014
Video Voip Sip Sdk - Video Voip Sdk - Video Sip Sdk - Video Voip Sip Sdk For Windows
VaxVoIP SIP Server SDK 2.2VaxSoft

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 almost ...

VaxVoIP SIP Server SDK 2.2 by VaxSoft
Platform: WindowsDevelopment- Components & Libraries
License: SharewareSize: 19.7 MBReleased: 04 December, 2014
Sip Server - Ip-Pbx - Sip Pbx - Sip Gateway
Telepati SIP Phone Freeware 1.5Research Lab Inc

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 ...

Telepati SIP Phone Freeware 1.5 by Research Lab Inc
Platform: Handheld,  Palm OS,  Windows CE,  Palm OS 6.0Communications- Telephony
License: FreewareSize: 1.4 MBReleased: 12 January, 2009
ENUMresolver 2.00Northwest Performance Software, Inc.

A freeware program designed to query 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 DNS assigned to your system (or specifc user defined DNS) using the or other root tree for the corresponding NAPTR ...

ENUMresolver 2.00 by Northwest Performance Software, Inc.
Platform: WindowsNetwork & Internet- Search/Lookup Tools
License: FreewareSize: 439.0 KBReleased: 16 January, 2012

TekSIP is a SIP Registrar and Stateless SIP Proxy for Windows. You can use freeware version for both commercial and personal use.

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 ...

TekSIP by Yasin KAPLAN
Platform: WindowsServers- Firewall & Proxy Servers
License: FreewareSize: 1.9 MBReleased: 02 April, 2012
TekIVR 1

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

Platform: WindowsNetwork & Internet- Terminal & Telnet Clients
License: FreewareSize: 563.0 KBReleased: 27 February, 2012

sipcli is a command line SIP user agent that runs under Windows (XP, 2003 Server) which enables making SIP (Based on RFC 3261) based test calls.

Platform: WindowsNetwork & Internet- Terminal & Telnet Clients
License: FreewareSize: 20.0 KBReleased: 14 May, 2012
Interaction SIP Proxy 4.0Interactive Intelligence

Interaction SIP Proxy performs day-to-day load balancing, and is inherently capable of performing business continuity and survivable remote site telephony (SRST) during disaster recovery. The Interaction SIP Proxy software complies with RFC3261 and is easy to install and use — simply load it on any Windows®-based machine for a sophisticated ...

Platform: WindowsServers- Firewall & Proxy Servers
License: FreewareSize: 34.7 MBReleased: 29 April, 2012
Net2Phone SIP Dialer 3.7Net2Phone Inc.

Net2Phone SIP Dialer can help if you do not require fax functionality for the best possible call quality. This program runs on PCs using Windows Vista, Windows XP, and Windows 2000 or newer with a sound card, speakers, and a microphone. For best performance is recommend using a headset (headphones plus integrated microphone).

Platform: WindowsCommunications- Other Comms Tools
License: FreewareSize: 4.9 MBReleased: 27 March, 2012
3CX SIP Proxy Manager 9.03CX

The SIP Proxy Tunnel can combine all SIP (signaling) and RTP (media) VoIP Packets from one location (typically a remote office) and deliver them to and from another location (typically the PBX Server) using a custom TCP protocol. This simple concept allows us to exploit the SIP Proxy Tunnel to overcome difficult situations, or to simplify a network ...

Platform: WindowsCommunications- Other Comms Tools
License: FreewareSize: 1.5 MBReleased: 26 January, 2012
Billion Phone 1.1ProfInfoTech

Billion Phone - compact convenient SIP phone software for making voice calls using your computer. The main advantage of Billion Phone is ability to show customer balance on the screen when working with Billion Softswitch, Billion PBX and some other SIP servers.


- SIP registration
- Incoming and outgoing calls ...

Platform: WindowsCommunications- Other Comms Tools
License: FreewareSize: 2.1 MBReleased: 21 March, 2012
PortGo 6.8PortSIP Solutions, Inc.

PortGo is the newest SIP softphone from PortSIP, it's built base on PortSIP VoIP SDK, allowing users to enjoy multimedia communications in a dynamic way.

Featuring an intuitive interface, PortGo is expanding the softphone experience by making it even easier to make VoIP and Video over IP calls, see when your contacts are available ...

Platform: WindowsCommunications- Telephony
License: FreewareSize: 5.2 MBReleased: 31 March, 2012
VNN-SIP-Fone 1.6Vietnam Datacommunication Company

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.

Platform: WindowsCommunications- Telephony
License: FreewareSize: 4.8 MBReleased: 11 May, 2012
SipDiscount 4.8Finarea S.A. Switzerland

Simply sign up for SIP-discount, enter the appropriate settings in your SIP-device and call at the lowest rates available.
All calls are delivered at the PSTN networks at a fraction of the costs of regular (international) calls. Our cutting-edge technologies ensure crystal clear sound quality and reliability.

Platform: WindowsCommunications- Telephony
License: FreewareSize: 5.1 MBReleased: 22 June, 2012
PortSIP Softphone 3.5PortSIP Sutions, Inc.

This is a full featured Voice Over IP Phone in software used to connect with VoIP PBX compatible with SIP like Open SER, Asterisk, Portaone, Radvision, Nortel, or a variety of international telephony providers.

It has a lot of popular features like call recording, attended and blind transfer, hold, auto answer, do not disturb, and conference ...

Platform: WindowsCommunications- Telephony
License: FreewareSize: 0Released: 28 January, 2012
PCBest Networks SIP PBX V2.01PCBest Networks

A Windows free SIP IP PBX software. It is very easy to use and deploy, with powerful features like:ACD, Auto Attendant, Call Park, Ring Group, Conference, Call Pickup Group, Auto Outbound Dialer, Database CDR report, Database PBX Status Report. It supports SIP extensions, SIP accounts, inbound and outbound calls, and customized dial plans. With new ...

PCBest Networks SIP PBX V2.01 by PCBest Networks
Platform: Windows,  Win95,  Win98,  WinXPCommunications- Telephony
License: FreewareSize: 4.0 MBReleased: 01 January, 2013
Enigma Softphone 0.8.6Racequeen Inc.

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.

Platform: Windows,  WinXPCommunications- Other Comms Tools
License: FreewareSize: 20.5 KBReleased: 13 December, 2012
Enigma - Softphone - Free Softphone - Free Calls
SIP Communicator 1.0 Build 3967

SIP Communicator is a instant messenger client. A Java VoIP and Instant Messaging client. SIP Communicator is an audio/video Internet phone and instant messenger that supports some of the most popular instant messaging and telephony protocols such as SIP, Jabber, AIM/ICQ, MSN, Yahoo! Messenger, Bonjour, IRC, RSS and counting.1. Audio and Video calls ...

Platform: WindowsCommunications- Chat & Instant Messaging
License: FreewareSize: 33.5 MBReleased: 20 March, 2013
X-Lite SIP VoIP Softphone

0 is the market's leading free SIP based softphone available for download. Based on the advanced architecture of eyeBeam 1.5 (CounterPath's carrier grade telephony client), the newX-Lite is designed to showcase some of the feature rich abilities available with our commercial softphone such as superior audio and video quality, zero-touch configuration, ...

Platform: WindowsCommunications- Telephony
License: FreewareSize: 38.3 MBReleased: 13 April, 2013
CounterPath Software - Sip - Applications - Enterprise

TekPhone is a SIP (Session Initiation Protocol) VoIP Softphone that provides UA agent functions (Based on RFC 3261) runs under Windows (XP, Vista, 2003 Server). Use it just for testing environments! Do not use for production systems.TekPhone Features:
1. Simple, easy-to-use interface.
2. TekPhone Supports (Only) G.711 A - Mu law codecs and ...

Platform: WindowsCommunications- Telephony
License: FreewareSize: 1.1 MBReleased: 03 May, 2013
Network - Programming - Security - Internet
Sip Viewer

Sip Viewer help you view and analyze SIP logs. It aims to output the extracted call flows as simple ASCII ladders directly in the command prompt (or using an eclipse plugin).
Sip Viewer Features:
1. Parse sip logs and aggregate sessions
* Able to match many dialogs in the context of a back to back user agent
* Configurable ...

Platform: WindowsWeb Development- Web Log Analysers
License: FreewareSize: 187.9 KBReleased: 19 March, 2013
SIP Inspector

A convenient simulation tool for SIP messages and scenarios. SIP Inspector is a software written in JAVA to simulate different SIP messages and scenarios. You can create your own SIP signaling scenarios, customize SIP messages and monitor incoming and outgoing messages. The tool can play RTP streams from a pcap file.Features:
1. VoIP calls testing

Platform: WindowsNetwork & Internet- Other
License: FreewareSize: 414.5 KBReleased: 09 May, 2013

TekIVR is a SIP (Based on RFC 3261) Interactive Voice System (IVR) runs under Windows. TekIVR tested on Microsoft Windows XP, Vista, Windows 7, and Windows 2003-2008 server. Please see installation requirements at Support section. and don't forget to read Readme file comes with the distribution.Major features:
1. Simple, easy-to-use interface.

Platform: WindowsServers- Other Server Applications
License: FreewareSize: 1.5 MBReleased: 06 May, 2013
SIP IVR For Windows RFC 3261
Fax Voip T38 Fax & Voice 8.1.1FaxVoip Software

Multiple SIP Registrations. Call Routing. Voice Fax Modem for your Fax & Voice software. Color faxes over VOIP and ISDN. Incoming Routing Methods. Fax-On-Demand.
For your fax or voice application, it's a Voice Fax Modem. You can setup your Fax & Voice program to operate with Fax Voip Virtual COM ports or virtual Fax Voip 14.4K TAPI Voice-Fax ...

Fax Voip T38 Fax & Voice 8.1.1 by FaxVoip Software
Platform: Windows,  Windows Server,  WinXPCommunications- Fax Tools
License: SharewareSize: 91.5 MBReleased: 12 March, 2019
Sip - H323 - H 323 - Isdn
Fax Voip Windows Fax Service Provider 2.4.1FaxVoip Software

711 codec) faxes using your VoIP (SIP or H.323) infrastructure without any further cost.
Windows Fax Service and Windows Fax and Scan application is an integrated fax software included in all Windows versions. It is an extensible fax platform that you can use to deploy shared fax resources in your organization.
Fax Voip FSP replaces the ...

Fax Voip Windows Fax Service Provider 2.4.1 by FaxVoip Software
Platform: Windows,  Windows Server,  WinXPCommunications- Fax Tools
License: SharewareSize: 47.1 MBReleased: 29 April, 2019
Fsp - Fax Service Provider - Windows Fax Service - Voip
OfficeSIP Alerter 1.0OfficeSIP Communications

OfficeSIP Alerter is a simple, easy-to-use and free sip messenger. It was not designed for prolonged chat, it is handy when you need to send or receive single message. It is good replacement for old-fashioned Alerter Service. OfficeSIP Alerter has simple interface but it is based on Session Initiation Protocol, so you can exchange messages with users ...

OfficeSIP Alerter 1.0 by OfficeSIP Communications
Platform: Win95,  Win98,  WinME,  WinNT 3.xCommunications- Chat & Instant Messaging
License: FreewareSize: 665.6 KBReleased: 12 January, 2009
SiPHome Classic 2.0SiPHome

Bei abgehenden Gesprächen zu anderen SIP- und IAX-Adressen übertragen wir standardmässig die SIP- bzw. IAX-Adresse sowie Ihren Namen - alternativ auch anonym. Bei Gesprächen, die ins Festnetz terminiert werden, ist die mit-übermittelte Rufnummer erstmal grundsätzlich anonym. Und genau hier setzt ...

Platform: WinXP,  Windows Vista Home Basic,  Windows Vista Home Premium,  Windows Vista StarterCommunications- Telephony
License: FreewareSize: 583.7 KBReleased: 12 January, 2009

Free Download 64 Notice: Free Download 64 is not responsible for Sip software you are downloading nor for details provided about the software listed here about Sip, as developers can modify program information without notifying us. Even if we try to check the files for viruses, we cannot guarantee that they are safe and clean. For your own protection always virus scan downloaded files for viruses, spyware and malware. We at does not provide any torrent files, links to any file sharing sites including Rapidshare, YouSendIt, SendSpace, DepositFiles, etc. Software piracy is theft. All download links of listed software are direct full download from publishers sites or selected mirrors. Using crack, warez version, warez passwords, patches, serial numbers, registration codes, keymaker, key generator, keygen or pirate license key is illegal and prevent future software developments.