Microsoft Corporation
8
Freeware
It can be used for creating server-side Session Initiation Protocol (SIP) apps.
2
Callcentric
187
Freeware
A small application that allows you to make and receive calls with Callcentric.
77
OfficeSIP Communications
159
Freeware
Provides you everything you need to facilitate communication around the office.
8
Microsoft Corporation
1,361
Commercial
Need IM in the office but cant use Windows Messenger? get Office own IM!
2
Mizutech SRL
199
Shareware
Mizu Softphone is a professional VoIP softphone for Windows users.
Ozeki Ltd.
14
Demo
Provides professional technology for VoIP voice calling.
3
AdoreSoftphone
208
Demo
A basic SIP Softphone that allows to connect to VoIP PBX and providers.
3telCafe
78
Freeware
A free SIP Softphone which offers PC-to-Phone service.
ZeeVoice
17
Freeware
A sip softphone for making and receiving VoIP calls.
11
PortSIP Solutions, Inc.
82
Freeware
PortGo is the newest SIP softphone from PortSIP, it's built base on PortSIP VoIP.
IntuitTech Sdn. Bhd
Freeware
hayibo is the first SIP softphone application written for business users.
3
iaxtalk.com
33
Freeware
sipLite softphone is a free softphone which works with SIP protocol.
vpcashcall
2
Freeware
The VpcashCalls Softphone is a basic softphone which runs on Microsoft Windows.
32
ageet Corporation
11
Commercial
The new AGEphone Desktop 2 is SIP based internet telephony softphone.
1
PortSIP Sutions, Inc.
73
Freeware
Softphone compatible with SIP for voice over IP PBX or international providers.
2
Ecotronics Ventures LLC
144
Freeware
Kapanga Softphone is a powerful and unique SIP software telephone.
