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FreePBX vs opensips

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

FreePBX icon
FreePBX
opensips icon
opensips

FreePBX vs opensips: The Verdict

⚡ Summary:

FreePBX: FreePBX is an open source web-based GUI that controls and manages Asterisk, an open source communication server. It enables managing extensions, voicemail, call routing, IVRs, and other PBX features through a web browser.

opensips: OpenSIPS is an open source SIP proxy and B2BUA server used to build and deploy SIP platforms and VoIP infrastructures. It provides advanced routing, signaling, and session management capabilities for building large scale SIP networks.

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 FreePBX opensips
Sugggest Score — —
Category Business & Commerce Network & Admin
Pricing Open Source Open Source

Product Overview

FreePBX
FreePBX

Description: FreePBX is an open source web-based GUI that controls and manages Asterisk, an open source communication server. It enables managing extensions, voicemail, call routing, IVRs, and other PBX features through a web browser.

Type: software

Pricing: Open Source

opensips
opensips

Description: OpenSIPS is an open source SIP proxy and B2BUA server used to build and deploy SIP platforms and VoIP infrastructures. It provides advanced routing, signaling, and session management capabilities for building large scale SIP networks.

Type: software

Pricing: Open Source

Key Features Comparison

FreePBX
FreePBX Features
  • Web-based GUI for managing Asterisk
  • Extension management
  • Voicemail
  • Call routing
  • IVR
  • Call recording
  • Call reporting
  • Fax server
  • Conferencing
opensips
opensips Features
  • SIP signaling
  • Presence and instant messaging
  • Load balancing and failover
  • NAT traversal
  • Call routing and policy enforcement
  • Media handling and transcoding
  • Accounting and billing
  • Integration with various databases

Pros & Cons Analysis

FreePBX
FreePBX

Pros

  • Free and open source
  • Easy to use graphical interface
  • Active development community
  • Highly customizable
  • Supports a wide range of telephony features

Cons

  • Can have a steep learning curve
  • Requires Linux server and Asterisk
  • Limited official support options
  • Some advanced features require paid modules
opensips
opensips

Pros

  • Open source and free
  • High performance and scalability
  • Modular and extensible architecture
  • Supports wide range of protocols and standards
  • Active community support

Cons

  • Steep learning curve
  • Requires expertise to setup and configure
  • Limited graphical user interface
  • Need to integrate external components for full-featured system

Pricing Comparison

FreePBX
FreePBX
  • Open Source
opensips
opensips
  • Open Source

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Learn More About Each Product

FreePBX
FreePBX
Reviews, pricing & alternatives →
opensips
opensips
Reviews, pricing & alternatives →

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