Asterisk - An open source telephony switching and private branch exchange service for Linux.
Digium - Digium offers IP phones, business phone systems, such as Switchvox IP PBX, and custom communications solutions for Asterisk.
Wazo.io - The UCaaS Platform Built for MSPs
4n6 Communigate Converter - 4n6 Communigate server converter is a reliable solution to convert Communigate profile raw data in several reusable formats and services such as EML, MBOX, PST, PDF, HTML, Text, CSV, vCard, ICS, Gmail, Office 365, and IMAP Server.
FreeSWITCH - FreeSWITCH is an open-source media application designed to support popular protools such as SIP and WebRTC and provides a platform to develop voice and video applications.
BitRecover MBOX Converter - Convert MBOX files of Thunderbird, Apple Mail, Eudora Mail, SeaMonkey, Google Takeout, etc. The tool offers 30+ output options like PST, EML, MBOX, MSG, EMLX, TXT, CSV, RTF, Thunderbird, Zimbra, Gmail, Yahoo, Microsoft 365, and Exchange Server.