Open Source Alternatives to Avaya Aura

An enterprise voice and unified communications platform designed for large organizations to connect users, locations, devices, and applications. The software provides a modular architecture featuring call control, SIP session management, centralized administration, and gateway connectivity. It supports large-scale distributed environments with capabilities for up to 300,000 users and 1 million devices per instance. The platform integrates with CRM tools and collaboration software like Microsoft Teams and Zoom through REST APIs and standardized protocols. It can be deployed on-premises, connected to cloud services, or managed via Avaya Managed Services. The system includes components for telephony application management, SIP routing, and presence and messaging services.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Avaya Aura give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 2 open source alternatives to Avaya Aura. The most popular are FreeSWITCH and OpenSIPS. Most use the GPL-2.0 or MPL-2.0 license, and 2 offer an official Docker image.