Kamailio

kamailio.org · checked 5 Oct 2026

#8 · Voice APIs

Visit kamailio.org ↗ Alternatives Kamailio vs Infobip Voice API

How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Voice APIs6.0#8 of 52

Kamailio is open source SIP server software for building VoIP and real time communications platforms.

Pricing

KamailioOpen source; released under GPLv2 or any later versionFree

As kamailio.org lists them, checked 5 Oct 2026.

Near it

All alternatives →

Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: kamailio.org
Price: Free tier
Free trial: No
Communications features: It supports SIMPLE instant messaging and presence, an embedded XCAP server, and an MSRP relay.
Control and monitoring: The project lists JSON and XMLRPC control interfaces and SNMP monitoring.
Documentation: The project provides documentation resources including module documentation, tutorials, installation guidance, and administrator and developer documentation.
Downloads: The project provides Debian and Ubuntu packages through an APT repository, RPM packages for CentOS, Fedora, and OpenSUSE, and source downloads.
Extensibility: The project describes a modular architecture with more than 150 modules in its source tree.
Founded: 2001
Integrations: The project lists backend support including MySQL, PostgreSQL, Oracle, Radius, LDAP, Redis, Cassandra, MongoDB, and Memcached.
Project history: The Kamailio project describes its collaboration process as starting on November 4, 2008, following development in the SIP Express Router, Open SER, and SIP Router projects.
Routing: Features include SIP forking, NAT traversal, load balancing, least cost routing, failover, and high availability replication.
Security: Listed security features include Digest SIP user authentication, authorization through ACL or group membership, and IP and network authentication.
Server roles: It can act as a SIP registrar, location server, proxy, application server, or redirect server.
Support: Community support is offered free on a best effort basis through mailing lists, Matrix, and IRC.

On these boards

Voice APIs#8 of 52

Built Kamailio?

Claim the page, then edit your card yourself from your member desk: its name, words, logo, screenshots, plans and links. Your desk shows how many readers open it.

Claim Kamailio