9
3CX System Ltd
30
Freeware
Be connected to all your contacts anyhwere anytime with 3CX VoIP Client.
53
ProfInfoTech
4
Shareware
New generation phone system working in IP-networks using SIP protocol.
pbxnsip Inc.
25
Freeware
It is designed for the entry or hybrid VoIP or IP PBX market space.
41
StarTrinity
180
Freeware
You can test VoIP network, SIP software or hardware.
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.
1
PortSIP Sutions, Inc.
74
Freeware
Softphone compatible with SIP for voice over IP PBX or international providers.
1
PCBest Networks
18
Freeware
Robust SIP ActiveX Phone is a powerful and robust SIP ActiveX phone client.
StarTrinity.com
11
Freeware
SIP VoIP Softswitch with billing for VoIP wholesale, GSM termination, IVR, PBX.
Vitali Fomine
42
Open source
It is video conference client for SIP server compatible with WebSocket.
37
Voicent Communications, Inc.
125
Freeware
Voicent Flex PBX is an easy-to-use software-based PBX system. It supports both analog phone services....
NeoNova BV
2
Shareware
The Astium PBX is the most advanced PBX's nowadays available.
38
Mindscape
6
Shareware
Phone Elements is the best suite of WP7 controls commercially available.
63
KaplanSoft
60
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.