3CX Ltd
116
Freeware
3CX provides out of the box integration with Microsoft Outlook.
AGG Software
7
Freeware
This module structure lets you reduce your program puchase costs.
PC Best Networks
Freeware
A Free Windows SIP PBX, with rich and powerful features.
Serverdata
23
Freeware
Enhances the PBX system and implements new features.
Zoiper.com
5,308
Shareware
Perform encrypted voice and video calls with family, friends, and colleagues.
9
Brandon Fuller
32
Shareware
The Now Playing plugin monitors the song you are listening to.
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.
1
VirtualDub-Fr.org
140
Freeware
It contains DirectShow plugin, MPEG-2 plugin, WMV plugin, AC-3 Plugin, etc.
Auerswald GmbH & Co.KG
8
Freeware
Enables you to attach an ISDN PBX or another ISDN device to two connections.
1
Code Plex
2
Freeware
FREE Windows-based open source PBX, IVR and Auto-Attendant Phone System.
3
AdoreSoftphone
208
Demo
A basic SIP Softphone that allows to connect to VoIP PBX and providers.
27
Emil Stoyanov
43
Open source
Kiax is a softphone for making VoIP calls to Asterisk PBX.
1
PortSIP Sutions, Inc.
74
Freeware
Softphone compatible with SIP for voice over IP PBX or international providers.
2
Zeosoft
253
Shareware
Call Accounting Software for a variety of PBX.
2
TTTelecom
49
Freeware
A CTI-integration tool for the Open Source Asterisk PBX.
