1)   AGEphone 1.41
AGEphone is a software for making phone calls from your PC. It offers a lot of features that come in handy, like importing your addresses from Outlook, an answering machine, call melodies, simultaneous use of multiple services and many more.

 2)   Express Talk VoIP Softphone 4.02
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.

 3)   VoIP SIP SDK 3.0.11
ABTO SIP SDK provides a solution to quickly build VoIP softphone that can dial and receive calls on your computer or add VoIP features into your software or web website.

 4)   RinGo 0.6
Make voice calls from any PC in the world. Free voice connectivity with Internet users. RinGo allows you to make calls from any place in the world from your PC without the use of PSTN (traditional telephony provider) for local and international calls

 5)   ZOIPER Free SIP and IAX softphone 2.14
ZOIPER 2.0 Free Edition is a user-friendly IAX and SIP softphone compatible with the Asterisk platform or any other IAX or SIP capable system. ZOIPER Free . Find out the many advantages of this FREE product from Attractel!

 6)   Voip Communicator 4.2
Voip 's is the market's leading free SIP based softphone available for download. Based on the advanced architecture of eyeBeam 1.5 (Phoner's carrier grade telephony client), the new Phoner is designed to showcase some of the feature rich capabilities

 7)   Voip Ekiga Communicator 2.0.11
Ekiga's is the market's leading free SIP based softphone available for download. Based on the advanced architecture of eyeBeam 1.5 (Phoner's carrier grade telephony client), the new Phoner is designed to showcase some of the feature rich capabilities

 8)   vPhonesoft 1.04
vPhone lets you see, hear, send files, SMS, MMS and chat with anyone, anywhere in the world - all for FREE. vPhonesoft allows to place high- quality videoconferences and call from your computer to any phone or cellular at great rates

 9)   Minisip 0.7
Minisip's is the market's leading free SIP based softphone available for download.

 10)   Buzzfon p2p 0.21
Download Buzzfon now, the latest voip software or peer to peer application. Free Unlimited Calls worldwide!

 11)   Ekiga 2.0.11
Ekiga's is the market's leading free SIP based softphone available for download.

 12)   kphone 4.2
Kphone's is the market's leading free SIP based softphone available for download.

 13)   PeerMe 0.9.6
PeerMe has developed an instant messaging platform which supports Peer to Peer Voice, PC to PC and PC to handheld voice communications, instant messaging, and peer-to-peer file transfer all over public Internet connections.

 14)   Wavigo 0907
Wavigo, delivers integrated Communications, Information and Entertainment. Includes:voice calling (multi-line/conferencing), supports any IM, SMS text messaging, ftp, news/weather/stock/podcast feeds, search/travel, media player-dialup or broadband.

 15)   MAX Phone 1.2
MAX Phone is the latest VoIP application from MAIN Telecom, allowing users to enjoy rich real-time communications.

 16)   PhonerLite 1.07
Unkompliziertes VoIP-Softphone mit Profil-Verwaltung und Kontaktverzeichnis.

 17)   ekiga Talk Multimedia Communicator 2.0.11
ekiga's is the market's leading free SIP based softphone available for download.

 18)   Voice over IP H323 SDK 2.1
Our brand-new VoIP H.323 SDK provides a powerful and highly customizable solution to quickly add H.323 based dial and receive phone calls features in your software applications.

 19)   MAX SIP ActiveX 1.1
Powerful and highly versatile VoIP SIP SDK to accelerate development of any type of VoIP-enabled applications, like e.g. a SIP soft phone, teaching tool, live support or meeting tool.