Kamailio vs FreeSWITCH

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

Kamailio is a Social & Communications solution with tags like sip, voip, realtime-communications, call-routing, policy-enforcement, media-handling, accounting, authorization, presence, instant-messaging.

It boasts features such as 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 pros including 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.

On the other hand, FreeSWITCH is a Network & Admin product tagged with telephony, voip, pbx, sip, webrtc.

Its standout features include 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 it shines with pros like Free and open source, Highly scalable and customizable, Supports wide range of use cases, Active community support, Available on multiple platforms.

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

Product Overview

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.

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.

Key Features Comparison

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

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

Pros & Cons Analysis

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

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

Pricing Comparison

Kamailio

• Open Source

FreeSWITCH

• Open Source