Nextiva offers a cloud‑based business phone system with VoIP calling, unified communications, and CRM integration. Below are 20 leading alternatives in the telephony software space, each with its own strengths in features, pricing, and scalability.
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Comprehensive cloud phone system with voice, video, messaging, and robust integrations for CRM and productivity tools.
Enterprise‑grade VoIP solution built into Zoom’s collaboration platform, offering call routing, auto‑attendant, and global PSTN connectivity.
Unified communications suite with voice, video, chat, and contact‑center features, plus analytics and AI‑driven call routing.
Scalable cloud phone system with integrated messaging, video, and API‑first capabilities for custom workflows.
Virtual phone system aimed at small businesses and entrepreneurs, offering toll‑free numbers, call forwarding, and voicemail transcription.
AI‑powered cloud phone platform with real‑time transcription, sentiment analysis, and seamless integration with Google Workspace and Microsoft 365.
Enterprise‑grade cloud PBX with advanced security, global reach, and deep integration with Cisco’s collaboration suite.
Phone system add‑on for Microsoft Teams, delivering PSTN calling, call queues, and integration with Office 365 ecosystem.
Affordable cloud PBX for small to midsize businesses, featuring auto‑attendant, mobile app, and unlimited calling in the U.S.
Cloud call center and phone system designed for sales and support teams, with real‑time dashboards and CRM integrations.
Modern cloud‑based phone system with call routing, IVR, and analytics, tightly integrated with Freshdesk’s support suite.
Feature‑rich VoIP solution offering auto‑attendant, call recording, and mobile/desktop apps for remote teams.
Enterprise‑focused cloud phone system with advanced call handling, contact‑center modules, and strong security controls.
Flexible VoIP service with pay‑as‑you‑go pricing, virtual numbers, and a suite of business communication tools.
AI‑driven cloud contact‑center platform that also provides inbound/outbound voice capabilities for sales and support.
Unified communications platform combining voice, video, messaging, and analytics for enterprise collaboration.
Advanced contact‑center solution built on RingCentral’s cloud infrastructure, offering omnichannel routing and AI insights.
Scalable contact‑center add‑on for Zoom Phone, featuring AI routing, workforce management, and omnichannel support.
The original Nextiva suite, still a strong contender with integrated voice, fax, and collaboration tools.
Robust contact‑center platform built on Vonage’s CPaaS, delivering omnichannel routing, AI bots, and deep analytics.