Vodia Networks

Vodia Phone app is a free add-on for your Vodia PBX that lets you connect to your account on your…

3CX Phone System

3CXPhone is a free VoIP phone available for Windows, iPhone or any Android based smart phone such…

Acrobits Softphone, an app for entry into the world of SIP.

An open source telephony switching and private branch exchange service for Linux.

FusionPBX is an open source FreeSWITCH GUI.

Kamailio® (successor of former OpenSER and SER) is an open source SIP server released under…

The most advanced interface for managing Asterisk PBX with Multitenant and Realtime capabilities

Softphone for VoIP, CAPI und TAPI.

RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies

Starfish PBX aims to be an open source alternative to Digium’s Switchvox.

Telephone is a VoIP program which allows you to make phone calls over the internet.

Description: Thirdlane PBX - VoIP Phone System and Unified Communications Solution for Small Business to Enterprise. Phone ☎ +1 415 / 261-6600

VoipSwitch provides complete VoIP and unified communications solutions.

Wazo is a unified communications platform based on Asterisk and focused on extensibility.

Desktop client for Google Hangouts

Cross-platform VoIP softphone dialer for SIP and IAX systems

FreePBX is a web-based open source GUI that controls and manages Asterisk (PBX).

OpenSIPS (Open SIP Server) is a mature Open Source implementation of a SIP server.