Alternatives to Rainbow

It suits teams that want calls, messaging, file sharing, and searchable project discussions in one platform.

Nextiva suits small companies seeking hosted business calling with messaging, meetings, and call-handling features.

Dialpad Connect

Dialpad Connect suits businesses that need calls, messaging, and meetings across desktop, mobile, and browser, with call routing and transcription.

Broadvoice Cloud PBX

It suits mid-market teams needing cloud calling, managed routing, multi-site administration, and desktop or mobile communications.

Zoom Workplace

Basic may suit an individual who needs meetings and collaboration tools with a free plan.

3CX

3CX suits organizations looking for business communications across desktop and mobile platforms, with call routing and voicemail transcription.

Rainbow suits businesses seeking messaging, calling, meetings, and connections to existing telephony systems.

GoTo Connect

GoTo Connect suits small, midsized, distributed, and multi-location businesses needing cloud telephony with meetings, messaging, customer channels, or contact-center tools.

Yeastar presents the phone system for businesses of any size and its hosted UCaaS offering for service providers.

It suits businesses seeking one cloud service for calling, messaging, meetings, files, and conference work across desktop, mobile, and web.