The Best 33 RingCentral Alternatives

  • Asterisk

    Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD.

    Free Open Source Mac OS X Windows Linux

  • Telzio

    Telzio is the most flexible and easy-to-use business phone system in the world, with full PBX features, mobile integration, and web management capabilities.

    Commercial

  • Elastix

    Elastix is an open source Unified Communications Server software that brings together IP PBX, email, IM, faxing and collaboration functionality.

    Freemium Linux

  • Yate - Yet Another Telephony Engine

    Yate is a softswitch (concept of separating the network hardware from network software). It supports VoIP protocols: H.323, SIP, IAX1, IAX2, RTP. For the plain old telephony systems (PSTN) it supports ISDN BRI and PRI.

    Free Open Source Linux

  • Phonebooth

    Phonebooth is a web-based phone system that routes your calls to any landline or mobile phone number you choose. Users receive a free local phone number to give out to...

    Commercial Web

  • Ring4

    Ring4 lets you generate smart phone numbers in over 20 countries with unlimited text and calling. FEATURES • Create & Manage multiple phone numbers as easy as...

    Freemium iPhone iPad

  • Dialpad

    Dialpad offers a secure, enterprise cloud phone system, business VoIP, toll free numbers, cloud PBX & integrations with Google Apps for Work & Office 365.

    Commercial Mac OS X Windows Android iPhone

  • Sideline

    Sideline is the work number for your smartphone. It uses your existing carrier network so that 2nd number works wherever you do.

    Free Android iPhone

  • Truly Wireless

    Truly Wireless is the most advanced, feature packed and reliable mobile business phone system available.

    Commercial Mac OS X Windows Android iPhone Web

  • Thirdlane Business PBX

    Advanced IP PBX and a Unified Communications platform based on Asterisk® - the worlds most popular open source PBX engine.

    Commercial Linux

  • Thirdlane Multi Tenant PBX

    Thirdlane® Multi Tenant PBX Platform is a reliable, cost-effective Multi Tenant IP PBX and Unified Communications software platform with support for voice...

    Commercial Linux

  • Zaplee

    Zaplee is a global cloud-based PBX phone system. Our system works with Skype, Google Voice, SIP, VOIP, landline and mobile phones. We can provide phone numbers in over...

    Commercial Mac OS X Windows Android iPhone Blackberry

  • Ringio

    Ringio is a CRM-friendly phone solution for businesses that love their customers and want to improve the quality of their real-time interactions.

    Commercial Mac OS X Windows Android iPhone Web

  • RingMe.io

    Ringme.io is here to revolutionize your definition of business communication. RingMe.io provides an all-inclusive package of cloud based business VoIP phone services. ...

    Commercial Web