Vietnam Datacommunication Company
VNN-SIP-Fone uses public Internet to establish calls between telephone and PC.
SIP Proxy - survivable remote site telephony (SRST) during disaster recovery.
Smart SIP Phone is useful platform for Smart Dialer.
SipLink is an alone application to work with 3rd party VoIP systems.
SIP Workbench is a graphical protocol analyzer and viewer.
A small application that allows you to make and receive calls with Callcentric.
Provides you everything you need to facilitate communication around the office.
Comprehensive Voice Recording System for multi-track digital audio recording.
LifeSize Softphone is a client for professional quality video conferencing.
Mizu Softphone is a professional VoIP softphone for Windows users.
PortSIP Sutions, Inc.
Softphone compatible with SIP for voice over IP PBX or international providers.
A basic SIP Softphone that allows to connect to VoIP PBX and providers.
A free SIP Softphone which offers PC-to-Phone service.
A sip softphone for making and receiving VoIP calls.
PortSIP Solutions, Inc.
PortGo is the newest SIP softphone from PortSIP, it's built base on PortSIP VoIP.
IntuitTech Sdn. Bhd
hayibo is the first SIP softphone application written for business users.
Fax Voip Softphone - SIP/H.323 software telephone. T.38 Fax. Call Recording.
sipLite softphone is a free softphone which works with SIP protocol.
The new AGEphone Desktop 2 is SIP based internet telephony softphone.
Ecotronics Ventures LLC
Kapanga Softphone is a powerful and unique SIP software telephone.
"VidPhone" is a H.323/SIP Video SoftPhone for Windows and Linux OS.