The Incredible PBX
Incredible PBX is a secure and feature-rich implementation of the Asterisk® PBX.
18 Alternatives To The Incredible PBX
3CX Phone System
3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such…
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.
Dimelo By RingCentral
Dimelo, Unified management platform for your digital conversations
FreeSENTRAL
FreeSentral is a full IP PBX consisting of a Linux Distribution, an IP PBX and a Web Graphical User…
FusionPBX
FusionPBX is an open source FreeSWITCH GUI.
Issabel
Your Open Source Solution For Unified Comunnications And More…
Kamailio
Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under…
Nexmo
Nexmo is a simple two way SMS API with global reach and wholesale rates
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
Starfish PBX
Starfish PBX aims to be an open source alternative to Digium’s Switchvox.
Taridium ipbx
Try Taridiums cloud based Phone System. VoIP PBX Enterprise · Customer Service Software · Cloud-Based Phone System · 24/7 Support · Save up to 80% off
Twilio
Brings voice and messaging to your web and mobile applications.
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.
freepbx
FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).
opensips
OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server.