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Kamailio

Support the development and administration of Kamailio SIP Server project.

Contribute


Become a financial contributor.

Financial Contributions

Recurring contribution
Backer

Become a backer for €5.00 per month and support us

Starts at
€5 EUR / month

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Recurring contribution
Sponsor

Become a sponsor for €100.00 per month and support us

Starts at
€100 EUR / month

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Custom contribution
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Make a custom one-time or recurring contribution.

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+ 3

Top financial contributors

Individuals

1
Fred Posner

250 EUR since Feb 2025

2
Giovanni

200 EUR since Apr 2025

3
Nick J

20 EUR since Apr 2025

4
Michal Hajek

20 EUR since Apr 2025

Organizations

1
QXIP

1,000 EUR since Apr 2025

2
Evariste Systems

125 EUR since Apr 2025

3
PGPX

100 EUR since Apr 2025

Kamailio is all of us

Our contributors 10

Thank you for supporting Kamailio.

Fred Posner

Admin

€250 EUR

QXIP

€1,000 EUR

Giovanni

€200 EUR

Evariste Systems

sponsor

€125 EUR

PGPX

sponsor

€100 EUR

Nick J

€20 EUR

Michal Hajek

€20 EUR

Budget


Transparent and open finances.

View all transactions
+€100.00EUR
Completed
Contribution #847817
+€125.00EUR
Completed
Contribution #845935

Credit from Michal Hajek to Kamailio

+€20.00EUR
Completed
Contribution #845512
Today’s balance

€1,535.86 EUR

Total raised

€1,535.86 EUR

Total disbursed

--.-- EUR

Estimated annual budget

€4,410.00 EUR

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 realtime 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: 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; Json and XMLRPC control interface, SNMP monitoring. 

Our team