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.

• License: Freeware
• Language: English
• Release: 2007-08-18
• Size: 214 Kb
• Cost: Free

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 delivers superior voice quality by integrating advanced digital voice processing features including acoustic echo cancellation, noise cancellation and adaptive jitter buffering.

• License: Shareware
• Language: English
• Release: 2005-09-18
• Size: 1 Mb
• Cost: 1500.00 $

PCBest SIP SDK is one of most widely used tools to develop SIP applications. It is simple, well designed and orginized, fexible and reliable. It will save you tons of time to develop a mature voip application. 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.

• License: Demo
• Language: English
• Release: 2007-09-11
• Size: 2 Mb
• Cost: 1000.00 $

SIP Phone DLL - A powerful and highly versatile VoIP SDK to accelerate development of SIP applications. Our brand-new SIP SDK provides a powerful and highly versatile solution to add quickly SIP (Session Initiation Protocol) based dial and receive phone calls features in your software applications. It accelerates the development of SIP/ RTP compliant soft phone with a fully-customizable user interface and brand name.

• License: Commercial
• Language: English, German
• Release: 2008-02-28
• Size: 9 Mb
• Cost: 999.00 $

VoIP SIP SDK - A powerful and highly versatile VoIP SDK to accelerate development of SIP applications. Our brand-new SIP SDK provides a powerful and highly versatile solution to add quickly SIP (Session Initiation Protocol) based dial and receive phone calls features in your software applications. It accelerates the development of SIP/ RTP compliant soft phone with a fully-customizable user interface and brand name.

• License: Commercial
• Language: English, German
• Release: 2007-09-22
• Size: 3 Mb
• Cost: 999.00 $

VoIP SIP SDK with DLL, ActiveX and .NET - A powerful and highly versatile VoIP SDK to accelerate development of SIP applications. Our brand-new SIP SDK provides a powerful and highly versatile solution to add quickly SIP (Session Initiation Protocol) based dial and receive phone calls features in your software applications. It accelerates the development of SIP/ RTP compliant soft phone with a fully-customizable user interface and brand name.

• License: Commercial
• Language: English, German
• Release: 2008-02-21
• Size: 9 Mb
• Cost: 999.00 $

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

• License: Shareware
• Language: English
• Release: 2006-01-01
• Size: 238 Kb
• Cost: 27.50 $

Best Phone is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile and pc to landline. Best Phonoffers you a free phone number to make free pc to pc calls and receive free incoming calls from any phone. Best virtually converts your pc into a second phone. Best Ph also offers outstanding features such as Video Call, Follow Me Service, Voice Mail, Video Chat, MP3 Player, Video Streaming, Fax and Online Search.

• License: Freeware
• Language: English
• Release: 2006-04-20
• Size: 20 Mb
• Cost: Free

Download Globe7 and call any Phone anywhere in the World for Free. Globe7 also offers Free High quality PC to PC Video calls with your Globe7 friends. Just Watch videos in Globe7 TV and earn Free Extra minutes to make Free International calls. Globe7 TV Provides exclusive International News, Latest movie trailers, Entertainment Video clips for all countries and many more to come.

• License: Freeware
• Language: English
• Release: 2006-07-30
• Size: 7 Mb
• Cost: Free

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.

• License: Demo
• Language: English
• Release: 2005-09-01
• Size: 2 Mb
• Cost: 799.00 $

VoIP H.323 SDK - A powerful and highly versatile VoIP SDK to accelerate development of H.323 applications and websites Our brand-new VoIP H.323 SDK provides a powerful and highly versatile solution to add quickly H.323 based dial and receive phone calls features in your software applications. It accelerates the development of H.323 compliant soft phone with a fully-customizable user interface and brand name.

• License: Commercial
• Language: English, German
• Release: 2008-04-03
• Size: 7 Mb
• Cost: 1499.00 $

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, or any other apps). Samples and libs are downloadable from PCBest Network's website(www.pcbest.net).

• License: Shareware
• Language: English
• Release: 2007-08-06
• Size: 1 Mb
• Cost: 19.99 $

Adore Video Softphone makes your voice and video chat easy and approachable. Adore Video Softphone is the new choice for an eye-opening real and revolutionized lifestyle. Today's tough and hectic life demands better service and peace of mind all in budget. The Adore Video Softphone with slashed International calls and video facility make your every call a unique experience. It requires an external hardware called web cam and an Adore Softphone

• License: Freeware
• Language: English
• Release: 2007-12-07
• Size: 2 Mb
• Cost: Free

ZOIPER 2.0 Free SIP and IAX is a user-friendly softphone, compatible with Asterisk or any other SIP or IAX capable system. High-quality VoIP calling experience with features like: * SIP + IAX protocols * SIP over TCP/TLS/UDP(STUN support) * Echo cancellation * DTMF tones * Multiple audio devices support * Automatic user registration * Call transfer * Hold function * Multilanguage support * Portable storage compatibility * Codecs: GSM, ulaw, alaw, speex, ilbc

• License: Freeware
• Language: English
• Release: 2007-07-19
• Size: 2 Mb
• Cost: Free

Minipax is newest generation of Vidosystem Softphone. Our engineer had successfully recode sip engine to produce more robust, small application, better nat traversal sip softphone. Minipax NOW support SIP tunneling. SIP tunneling works where clients firewall blocked or on a country where voip is blocked. SIP tunneling also give more security to voip Minipax support hold function, mute function, mic/spk volume control, transfer call, for

• License: Freeware
• Language: English
• Release: 2007-12-26
• Size: 1 Mb
• Cost: Free

We believe that our customers deserve nothing short of best. To cater the varied communication needs of our clients and deliver superior solutions and services in Softphone. Our first model is Adoresoftphone Lite 2.0, which is the basic model of SIP Softphone especially designed to give you a soothing communication experience. Every model of SIP Softphone is crafted out while keeping the various requirements of our clients

• License: Freeware
• Language: English
• Release: 2007-12-08
• Size: 2 Mb
• Cost: Free

Best_phone_2006 is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile and pc to landline. Best_phone_2006 ffers you a Best_phone_2006 number to make free pc to pc calls and receive free incoming calls from any phone.Best_phone_2006 also offers outstanding features such as Video Call, Follow Me Service, Voice Mail, Video Chat, MP3 Player, Video Streaming, Fax and Online Search.

• License: Freeware
• Language: English
• Release: 2006-04-20
• Size: 20 Mb
• Cost: Free

VOIP H323 DLL Soft Phone SDK brings H.323 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 or use the Gateway or the Gatekeeper to connect to /or from PSTN lines. Now VOIP open source projects have made it easier to implement a customized VOIP Solution eliminating costly PSTN lines.

• License: Shareware
• Language: English
• Release: 2005-09-24
• Size: 5 Mb
• Cost: 399.00 $

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.

• License: Freeware
• Language: English, Arabic, ChineseSimplified, ChineseTraditional, Czech, Danish, Finnish, French, German, Greek, Hindi, Hungarian, Italian, Japanese, Korean, Other, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish, Urdu, Vietnamese, Yiddish
• Release: 2005-02-05
• Size: 1 Mb
• Cost: Free

Register to Vphonet and make low-cost international calls from your PC or directly from your mobile. Calling between Vphonet users is FREE. Vphonet offers advantage VoIP communication features: call forwarding, call transfer, call deflection, video conferences, video messages, file transfer, answering machine, SMS messaging (PC-to-PC, PC-to-Phone). You can use Vphonet free around the world. Vphonet is VoIP Internet Phone with unique protocol.

• License: Freeware
• Language: English, French, Russian, Polish, Hebrew
• Release: 2008-04-03
• Size: 2 Mb
• Cost: Free