Aastra
85
Commercial
Aastra BusinessCTI is an integrated call administration software.
1
SIP Communicator
116
Open source
SIP Communicator - the Java VoIP and Instant Messaging client.
9
3CX System Ltd
30
Freeware
Be connected to all your contacts anyhwere anytime with 3CX VoIP Client.
1
PCBest Networks
18
Freeware
Robust SIP ActiveX Phone is a powerful and robust SIP ActiveX phone client.
Abto, LLC
Shareware
VoIP SIP SDK provides a powerful and highly customizable solution.
Vitali Fomine
42
Open source
It is video conference client for SIP server compatible with WebSocket.
63
KaplanSoft
58
Shareware
TekSIP is a SIP Registrar and SIP Proxy for Windows.
E-Soft Billing (Pvt.) Ltd.
2
Demo
SIP Mobile Dialer is designed for small and mid size VoIP/SIP providers.
Aastra Technologies Limited
22
Freeware
Get all the features of the Aastra 6770 plus an integrated answering machine.
121
Martin Prikryl
188,276
Open source
WinSCP is a free SFTP client, FTP client, WebDAV client and SCP client.
2
Anton Raharja
11
Open source
This software enables voice, video and IM sessions based on XMPP, SIP and IAX2.
12
Net2Phone Inc.
770
Freeware
Net2Phone SIP Dialer lets you make phone calls using your computer.
2
Billion Online Technology Ltd.
24
Freeware
BOL SIPPhone is the leading SIP dialer, available for private label and logo.
2
Finarea S.A. Switzerland
239
Freeware
Enter your settings in SIP-device and call at the lowest rates available.
3
Octro, Inc.
62
Shareware
OctroTalk is an integrated instant messaging application VoIP call, SIP call etc.
