Microsoft Teams is a collaboration platform that allows for chat, meetings, file sharing, and integrations with other Microsoft products.
Starting from $5 per user per month
Best RingCentral RingEX Alternatives ranked by AI · updated Aug 2026
RingCentral RingEX is a cloud business communications service covering voice, team messaging, video meetings, SMS, and contact-management workflows. It targets organizations that want hosted PBX capabilities without operating Avaya-style call-control infrastructure.
Top 6 RingCentral RingEX alternatives
Asterisk is an open-source framework for building communications applications. It turns an ordinary computer into a communications server.
8x8 offers cloud-based communication and collaboration solutions for businesses.
Custom pricing based on business needs
Avaya Aura Platform is an enterprise communications platform for organizations that need telephony, unified communications, contact center integration, and session management across...
Pros
- Strong call control and SIP routing for large, complex enterprise deployments
- Supports hybrid architectures and integration with Avaya contact center products
- Mature survivability, redundancy, and geographic resiliency features
Cons
- More complex to deploy and administer than Microsoft Teams or Zoom Workplace
- Typically requires professional services and specialized Avaya expertise
- Higher infrastructure and ownership costs than cloud-first UCaaS products
Cisco's UC platform with advanced collaboration tools.
Pros
- Comprehensive feature set
- Integration with Cisco ecosystem
Cons
- High cost of ownership
- Steep learning curve
Contact for pricing
6
Zoom Workplace
Zoom Video Communications
Zoom Workplace is a cloud collaboration suite combining meetings, chat, phone, scheduling, and related workplace tools. Zoom Phone provides cloud PBX features...
Pros
- Generally simpler to deploy and use than Avaya Aura
- Strong video meeting quality and broad meeting-device support
- Zoom Phone provides a practical cloud PBX with international calling options
Cons
- Less suitable than Aura for highly customized carrier and session-routing architectures
- Advanced contact center functionality may require separate Zoom products or partners
- Some enterprise telephony features depend on plan and regional availability
Freemium; paid plans from $14.99/user/mo
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