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Elastix vs Kamailio

Professional comparison and analysis to help you choose the right software solution for your needs.

Elastix icon
Elastix
Kamailio icon
Kamailio

Elastix vs Kamailio: The Verdict

⚡ Summary:

Elastix: Elastix is an open source unified communications server software that combines IP PBX, email, IM, faxing, and collaboration features. It is built on top of free open source software like Asterisk, HylaFAX, Openfire, and Postfix.

Kamailio: Kamailio is an open source SIP server used for VoIP and real-time communications. It handles call routing, policy enforcement, media handling, accounting, and authorization with support for presence and instant messaging.

Both tools serve their respective audiences. Compare the features, pricing, and user ratings above to determine which best fits your needs.

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Elastix Kamailio
Sugggest Score — —
Category Network & Admin Social & Communications
Pricing Open Source Open Source

Product Overview

Elastix
Elastix

Description: Elastix is an open source unified communications server software that combines IP PBX, email, IM, faxing, and collaboration features. It is built on top of free open source software like Asterisk, HylaFAX, Openfire, and Postfix.

Type: software

Pricing: Open Source

Kamailio
Kamailio

Description: Kamailio is an open source SIP server used for VoIP and real-time communications. It handles call routing, policy enforcement, media handling, accounting, and authorization with support for presence and instant messaging.

Type: software

Pricing: Open Source

Key Features Comparison

Elastix
Elastix Features
  • IP PBX for VoIP calls
  • Voicemail
  • Call conferencing
  • Call recording
  • Fax server
  • Instant messaging
  • Presence management
  • Email server
  • CRM integration
Kamailio
Kamailio Features
  • SIP proxy and registrar server
  • Presence and instant messaging
  • Load balancing and failover
  • NAT traversal
  • Media relaying
  • Accounting and billing
  • Flexible routing and policy enforcement
  • Modular architecture with extensive API

Pros & Cons Analysis

Elastix
Elastix

Pros

  • Open source and free
  • Built on proven open source components like Asterisk
  • Supports a wide range of telephony features
  • Easy to install and manage
  • Scalable for small to large deployments

Cons

  • Limited official support options
  • Requires technical expertise to setup and manage
  • Not as feature rich as some commercial UC solutions
  • Fragmented ecosystem of addons and integrations
Kamailio
Kamailio

Pros

  • Open source and free
  • Highly scalable and performant
  • Rich feature set for VoIP
  • Active community support
  • Modular and customizable
  • Supports wide range of SIP devices and clients

Cons

  • Steep learning curve
  • Requires expertise to setup and manage
  • Not as user friendly as commercial options
  • Limited official support and documentation

Pricing Comparison

Elastix
Elastix
  • Open Source
Kamailio
Kamailio
  • Open Source

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Learn More About Each Product

Elastix
Elastix
Reviews, pricing & alternatives →
Kamailio
Kamailio
Reviews, pricing & alternatives →

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