Sip

Phoner is a free softphone for ISDN and VoIP telephony. An answering machine and Text-To-Speech support complete the large package.

Make FREE pc-to-pc and pc-to-phone calls over Internet and ISDN/PSTN and SIP network. PC-Telephone is a powerful communications software that enables you to exploit the full communications potential of the Internet and public telephone networks ISDN/

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.

SIP Phone DLL allows to make PC-PC, PC-phone, or phone-phone calls or create Instant Messaging (IM) sessions over the Internet VOIP SIP Phone SDK brings protocol support for ActiveX. With this SDK one can create a simple web site voip service.

MoBif VSoftMSN for Windows ® XP Services Pack 2 Communicate using high-quality voice with MSN Messenger. Talk it up and save on long distance charges. Have a voice conversation through MoBif VSoft MSN is FREE.

Teleon Gateway for Skype is a VoIP gateway driver for PCTel PCI modem card. Calls can be forwarded from PSTN to Skype remote user and vice versa, in fix transfer mode or free dial mode.

Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP/ VOIP provider/ phone service. Easy to use interface to transfer, forward calls or set-up conference calls. Free download from http://www.3cx.com

Teleon Skype Gateway for voice modem is a VoIP gateway driver for common voice modem card. Calls can be forwarded from PSTN to Skype remote user and vice versa, in fix transfer mode or free dial mode.

Easy to use VoIP softphone with profile and contact management.