Best Mitel Alternatives & Competitors in 2025

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.)

eir SIP Voice is revolutionizing the core communications tool of business that carries both calls and data over just one connection.

SysAid is a robust IT Service Management (ITSM) platform powered by Agentic AI, automating the repetitive, time-consuming work.

Try for free paid Free Trial

Google Voice gives you one number for all your phones, voicemail organized in an email format, free...

VoIP.ms is a VoIP origination and termination tool.

Phonebooth is one of the leading voip providers, providing phone systems & phone service for small businesses.

TDS Business offers confidence in every connection through our business VoIP phone service options.

Business VoIP, cloud phone systems trusted by more than 150,000 companies. Powered by the leading cloud PBX VoIP platform, Nextiva is rated the best business VoIP service provider.

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

Open Source

Aircall is a call center software of a new generation designed for fast growing companies. Setup instantly and integrates to your CRMs

Hosted PBX is a scalable UC solution that uses cloud technology to integrate HD voice & data services, mobility, along with advanced calling

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

Open Source

Business phone system.

VirtualPBX provides hosted VoIP PBX phone services that give small and medium growing businesses a professional, fully automated call answering and routing solution