FreeSWITCH vs Kamailio

Struggling to choose between FreeSWITCH and Kamailio? Both products offer unique advantages, making it a tough decision.

FreeSWITCH is a Network & Admin solution with tags like telephony, voip, pbx, sip, webrtc.

It boasts features such as Open source, Supports multiple protocols like SIP, WebRTC, PSTN, Scalable and modular architecture, APIs for call control and management, Audio codecs like G.711, G.722, G.729, Opus, Speex, Video codecs like H.264, VP8, Conference calling and bridging, Call recording and monitoring, IVR and text-to-speech capabilities, Real-time call detail records and pros including Free and open source, Highly scalable and customizable, Supports wide range of use cases, Active community support, Available on multiple platforms.

On the other hand, Kamailio is a Social & Communications product tagged with sip, voip, realtime-communications, call-routing, policy-enforcement, media-handling, accounting, authorization, presence, instant-messaging.

Its standout features include 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, and it shines with pros like 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.

Feature	FreeSWITCH	Kamailio
Overall Score	N/A	N/A
Primary Category	Network & Admin	Social & Communications

Product Overview

FreeSWITCH

Description: FreeSWITCH is an open source telephony platform designed to facilitate the creation of voice and chat driven products scaling from a softphone to a PBX and even up to an enterprise-class softswitch. It can be used to power PBX solutions, voicemail services, conference calling, contact center solutions and more.

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.

Key Features Comparison

FreeSWITCH Features

• Open source
• Supports multiple protocols like SIP, WebRTC, PSTN
• Scalable and modular architecture
• APIs for call control and management
• Audio codecs like G.711, G.722, G.729, Opus, Speex
• Video codecs like H.264, VP8
• Conference calling and bridging
• Call recording and monitoring
• IVR and text-to-speech capabilities
• Real-time call detail records

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

FreeSWITCH

Pros

• Free and open source
• Highly scalable and customizable
• Supports wide range of use cases
• Active community support
• Available on multiple platforms

Cons

• Steep learning curve
• Requires expertise to setup and manage
• Limited built-in features compared to commercial PBXs
• Lacks polished admin interface

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

FreeSWITCH

• Open Source

Kamailio

• Open Source