1
Interactive Intelligence
5
Freeware
SIP Proxy - survivable remote site telephony (SRST) during disaster recovery.
1
SIP Communicator
116
Open source
SIP Communicator - the Java VoIP and Instant Messaging client.
Abto
Shareware
ABTO VoIP SIP SDK installation includes a number of finished softphone samples.
VoIP Bookers
Freeware
VoIP Bookers offers you quality voIP and sip calls.
3CX Ltd
30
Freeware
It can simplify Firewall configuration at both the remote and the PBX location.
E-Soft Billing (Pvt.) Ltd.
2
Demo
SIP Mobile Dialer is designed for small and mid size VoIP/SIP providers.
FaxVoip Software
1
Shareware
Fax Voip T.38 Console - T.38 and Audio Fax over VoIP (SIP, H.323).
63
KaplanSoft
58
Shareware
TekSIP is a SIP Registrar and SIP Proxy for Windows.
StarTrinity.com
11
Freeware
SIP VoIP Softswitch with billing for VoIP wholesale, GSM termination, IVR, PBX.
3
Octro, Inc.
62
Shareware
OctroTalk is an integrated instant messaging application VoIP call, SIP call etc.
3
AdoreSoftphone
208
Demo
A basic SIP Softphone that allows to connect to VoIP PBX and providers.
15
Linphone
2,574
Open source
Configure SIP accounts, perform VoIP phone calls or initiate audio conferences.
ZeeVoice
17
Freeware
A sip softphone for making and receiving VoIP calls.
Yasin KAPLAN
7
Freeware
TekPhone is a SIP VoIP Softphone that provides UA agent functions.
11
PortSIP Solutions, Inc.
82
Freeware
PortGo is the newest SIP softphone from PortSIP, it's built base on PortSIP VoIP.
