Sideline is the work number for your smartphone. It uses your existing carrier network so that 2nd number works wherever you do. Porting numbers from another service is available.



RingCentral is described as 'Cloud-based platform blending phone, video, meetings, messaging in one system with unlimited US & Canada calls, HD conferencing, AI tools, non-user collaboration' and is a Phone System in the social & communications category. There are more than 100 alternatives to RingCentral for a variety of platforms, including Web-based, iPhone, Android, SaaS and Windows apps. The best RingCentral alternative is Zoom, which is free. Other great apps like RingCentral are Google Voice, Briefing, Thirdlane Multi Tenant PBX and ChitChatter.
Sideline is the work number for your smartphone. It uses your existing carrier network so that 2nd number works wherever you do. Porting numbers from another service is available.









MirrorFly is customizable in-app communication SDKs for businesses to integrate chat, voice, video calling and video conferencing features on their existing web and mobile applications.




Heymarket is a business text service for your team. They get a shared inbox for messaging with people outside your organization. The other party never has to install an app & gets SMS. Free 14-day trial on heymarket.com, the App Store, & Google Play.




Truly Wireless is helping thousands of businesses leverage the power of cellular by turning smartphones into superphones. Truly is the best mobile business phone system for helping teams track, manage and share customer conversations using smartphones.
Dialpad offers a secure, enterprise cloud phone system, business VoIP, toll free numbers, cloud PBX & integrations with Google Apps for Work & Office 365.




Ninja Number is a second phone line that works on your smartphone and provides the leading edge solution for business owners to manage inbound communications economically, efficiently, effectively and effortlessly.



Unify Office is the new cloud team collaboration and communications service delivered by Atos Unify in partnership with RingCentral, a market leader in UCaaS.



Whether you're a business of one, or a thousand-employee enterprise, VirtualPBX offers a PBX system for businesses of any shape or size!.




alfaview is an in-sync high-tech video conference solution that enables you to hold online meetings across the world with live video transmission.




Ringblaze is a reliable phone system for small businesses. Ringblaze is a VoIP (Voice over Internet Protocol) number provider which means that placing and receiving calls and messages happen over the internet.




They offer similar features with fantastic customer service and better pricing