Digium Alternatives

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

Open Source freemium $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)

Advanced Hosted Cloud PBX for Your Team.

freemium

Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.

Visit website paid Free Trial $15.0 / Monthly

Switch is a cloud-based phone system built for Google Apps users.

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

Open Source

Predictive Call Center, Voice and Text Broadcasting app

MyOperator is a cloud-based call management system for voice communication purposes.

paid Free Trial $10.0 / Annually

The Cloud Phone System of choice for modern sales and support teams. We help end clueless conversations by adding context to every call.

paid $30.0 / Monthly

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.

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.

freemium $29.0 / One-off

Use your iPhone, iPad or iPod touch to make and receive calls using your 8x8 Virtual Office phone...

CommuniGate Pro is a scalable carrier-grade email server, unified communications server.

EML to PST Converter is an ultimate email conversion and migration tool.

Free and easy way to import messages from EML format files to the specified Outlook folder.