PC-Telephone
Make FREE pc-to-pc, pc-pc and cheap pc-to-phone, pc-phone, pc-to-fax, pc-fax, phone-to-pc, phone-pc, fax-to-pc, fax-pc calls over Internet/VoIP or ISDN/PSTN telephone networks. Use your computer as internet telephone, USB phone, USB handset, ISDN telephone, ISDN fax, answer phone, fax software,... Works with all Firewalls, NAT and LAN routers - nothing to configure.
http://www.pc-telephone.com/download/pc-telephone.exe - 1Mb - Download - Screenshot

Telepati SIP Phone Freeware
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... Tested and works with 75% of the providers. ... Though this implementation might turn out fairly complex, our VOIP Implementation Team at Research-Lab will guide you remotely for the same. ... Now VOIP open source projects have made it easier to implement a customized VOIP Solution eliminating...
http://www.bandwidthsaver.com/downloads/telepati.zip - 1Mb - Download - Screenshot

VSoft3
The VSoft Phone is a simple to use internet telephone system that can reduce your call costs. It uses the latest technology to let you make calls to friends, family, and business associates anywhere in the world without any chunky telephone equipment. ... VSoft features includes unlimited free VoIP to VoIP call (PC to PC), free video call, low cost VoIP to home/mobile call, send SMS, confrence, SMS to call, VoIP bridge. ... The VSoft Phone utilises a Broadband internet connection to allow a user to make VoIP calls to any phone number worldwide.
http://www.mobif.com.my/Download/VSoft3.3-setup.exe - 4Mb - Download - Screenshot

FREE PHONE
FREE phone is a SIP based VoIP soft phone, which integrates robust technologies such as SIP stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. FREE phone is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile... FREE phone offers you a free phone number to make free pc to pc calls and receive free incoming calls from any phone. ... Through FREE phone, you can have a live video chat with your FREE phone buddy.
http://www.globe7.com/downloadnow.php?refcode=AX12640 - 16Mb - Download - Screenshot

Call Any Phone any Where Free by Watching Videos
Net Phone has come up with new features. Call Any Phone any Where Free by Watching Videos. Net Phone is a Net based VoIP net phone, which integrates robust technologies such as Net stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. ... Net Phone offers you a free phone number to make free pc to pc calls and receive free incoming calls from any phone. ... Net Phone is a free downloadable net phone which enables you to make calls from pc to pc, pc to mobile and pc to landline.
http://www.6URL.com/0TSN - 7Mb - Download - Screenshot

RinGo
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. ... Instead of a regular phone you may use your PC equipped with headset and Internet-connection instead of regular telephone line. ... Regardless of your location you may call from your PC to any regular phone worldwide using special tariffs, much lower than standard international tariffs.
http://ringoclub.com/download/soft/ringo-setup_en.exe - 1Mb - Download - Screenshot

MobTime Cell Phone Manager
A easy-to-use pc software that helps you manage your mobile phone via data cable, IrDA or Bluetooth. The software supports most famous mobile phones of Nokia, Samsung, SonyEricsson, Motorola, LG, Siemens and so on. Now more than 300 models are supported. ... 7 Have a mobile phone, but don't know how to connect your computer to Internet via your phone because the connection parameters are a little complicated to set up! ... OK, quickly input messages on your pc and send out via your phone, even enjoy chatting like MSN or Skype.
http://www.mobtime.com/en/cpm/download.php - 12Mb - Download - Screenshot

Best Phone
Best phone is a SIP based VoIP soft phone, which integrates robust technologies such as SIP stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. Best phone is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile... Best phone offers you a free phone number to make free pc to pc calls and receive free incoming calls from any phone. ... Best phone Follow Me Service enables you to get calls redirected to your landline or mobile phone when you are not online.
http://www.globe7.com/downloadnow.php?refcode=AX12640X5555 - 16Mb - Download

soft Phone
soft Phone is a SIP based VoIP soft phone, which integrates robust technologies such as SIP stack by NIST (National Institute of Standards and Technology) and Java, JMF from Sun Microsystems. soft Phone is a free downloadable soft phone which enables you to make calls from pc to pc, pc to mobile... soft Phone offers you a free phone number to make free pc to pc calls and receive free incoming calls from any phone. ... soft Phone Follow Me Service enables you to get calls redirected to your landline or mobile phone when you are not online.
http://www.globe7.com/downloadnow.php?refcode=AX12640X1111 - 16Mb - Download - Screenshot

vPhonesoft
vPhone is a feature-rich VoIP Internet-Phone software. vPhone customers can download for FREE and talk to each other by voice or video calls, including multi-participant conference calls, send SMS, MMS messages from vPhone to vPhone and from vPhone to any e-mail, completely free! ... Additional features of vPhone allow our customers calling regular and cellular phones worldwide at great rates, sending SMS messages to cellular phones, a built-in answering machine with Web access, and all these exciting features: Voice call PC to PC, Voice call - PC to regular phones, Voice conference - 1+4...
http://www.virtualiphone.com/vPhoneSetup.php - 3b - Download - Screenshot