freepbx
FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
20 Alternatives To freepbx
3CX Phone System
3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such…
8x8 Business VoIP
8x8 business VoIP offers mobile apps, web conferencing, chat and the added benefit of a customer contact center.
Asterisk
An open source telephony switching and private branch exchange service for Linux.
AsteriskNOW
AsteriskNOW is the fastest way to get started building custom telephony solutions with Asterisk.
CallHippo
CallHippo offers cloud-based virtual phone systems for SME businesses.
CallHub
Predictive Call Center, Voice and Text Broadcasting app
Cloud Telephony
Cloud Telephony delivers automated telephone applications to any phone, any place, anytime.
Dialpad
Switch is a cloud-based phone system built for Google Apps users.
Digium
Digium offers IP phones, business phone systems, such as Switchvox IP PBX, and custom communications solutions for Asterisk.
FusionPBX
FusionPBX is an open source FreeSWITCH GUI.
JustCall
JustCall is a program that allows companies to use a cloud based call service with several important features that make the program perfectly suited for sales teams as well as support teams.
Kamailio
Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under…
Line2
Line2 adds a second phone number or complete cloud business phone system to smartphones & computers that’s robust yet affordable. Buy online or get a custom quote.
PBX in a Flash
PBX in a Flash is a PBX system based on Asterisk, FreePBX and CentOS, coming as an ISO download.
RingCentral
RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
The Incredible PBX
Incredible PBX is a secure and feature-rich implementation of the Asterisk® PBX.
Truly Wireless
Wireless business phone system built for sales and support team.
VitalPBX
VitalPBX is a full-feature PBX (phone system) based on Linux and Asterisk.
Wazo
Wazo is a unified communications platform based on Asterisk and focused on extensibility.
opensips
OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server.