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About

Kamailio® (successor of former OpenSER and SER) is an open-source SIP server released under GPLv2+, able to handle thousands of call setups per second. Kamailio can be used to build large platforms for VoIP and real-time communications, presence, WebRTC, Instant messaging, and other applications. Moreover, it can be easily used for scaling up SIP-to-PSTN gateways, PBX systems, or media servers like Asterisk™, FreeSWITCH™, or SEMS. Among the powerful features, are asynchronous TCP, UDP and SCTP, secure communication via TLS for VoIP (voice, video, text); WebSocket support for WebRTC; IPv4 and IPv6; simple instant messaging and presence with embedded XCAP server and MSRP relay; asynchronous operations; IMS extensions for VoLTE; ENUM; DID and least cost routing; load balancing; routing fail-over; accounting, authentication and authorization; support for many backend systems such as MySQL, Postgres, Oracle, Radius, LDAP, Redis, Cassandra, MongoDB, Memcached.

About

Siperb pairs a modern WebRTC softphone (Web, Windows, macOS, Linux, Android, iOS) with a hosted WebRTC-to-SIP proxy, so teams on Asterisk or FreeSWITCH get browser and mobile calling without replacing their existing PBX. Features include call recording (audio & video), blind/attended transfer, 3-way conferencing, and end-to-end encrypted media. The client UI is open source (AGPL-3.0); the hosted proxy and mobile apps are proprietary. Free Personal tier; Business (£2/user/month) and Business Pro (£5/user/month) add storage, custom integrations, and upcoming AI features.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Companies and professionals in need of a tool to develop secure and extensible SIP servers to improve their VoIP services

Audience

IT teams and businesses running Asterisk, FreeSWITCH, or other SIP-based PBX systems who want browser and mobile calling without replacing their existing phone system.

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

No information available.
Free Version
Free Trial

Pricing

Free – £2/user/month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Kamailio
Founded: 2001
United States
www.kamailio.org/w/

Company Information

Siperb
Founded: 2023
United Kingdom
www.siperb.com

Alternatives

Asterisk

Asterisk

Sangoma Technologies

Alternatives

PortaDialer

PortaDialer

PortaOne
VaxVoIP

VaxVoIP

VaxSoft
Adore SIP Softphone

Adore SIP Softphone

Adore Infotech

Categories

Categories

Integrations

360 Monitoring
Apache Cassandra
Asterisk
Fonimo
FreeSWITCH
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
PostgreSQL
Radius
Redis
memcached

Integrations

360 Monitoring
Apache Cassandra
Asterisk
Fonimo
FreeSWITCH
LDAP
MongoDB
MySQL
Oracle Cloud Infrastructure
PostgreSQL
Radius
Redis
memcached
Claim Kamailio and update features and information
Claim Kamailio and update features and information
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Claim Siperb and update features and information