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Note: this article was written by Daniel-Constantin Mierla alone, being a personal selection of who or what was considered to have impacted the evolution of Kamailio project to become what it is nowadays.

This is part of a series of articles dedicated to celebrating 20 years of development for Kamailio project. The previous two are 20 For Kamailio 20 and Other 20 For Kamailio 20. The next group of 20 people combines again developers and persons that had key roles in sustaining or promoting the project.

  • Henning Schulzrinne – co-author of initial SIP specifications (as well as for RTP), worked during mid 90s at what is nowadays FhG Fokus Institute, a professor at Columbia University, many of his students published papers that used SER-Kamailio application during the research process
  • Henry Sinnreich – regarded by many as godfather of SIP, he wrote reference books about SIP and was one of the strong forces pushing SIP to the industry at the beginning of the VoIP era
  • Jeff Pulver – without VoN events in the 2000s, probably the VoIP technologies wouldn’t have been adopted so fast. The SER-Kamailio project benefitted of daily tracks in the conference as well as stands in expo area
  • Jonathan Rosenberg – good or bad, the RFC3261 and SIMPLE specifications are associated with him and they shaped how the project had to develop over the years
  • Hugh Waite – active developer for many years with contributions for presence and websocket extensions
  • Mikko Lehto – participant to many Kamailio events, including developers meeting, with hundreds of contributions to various parts of the code and documentation
  • Maxim Sobolyev – author of RTPProxy back in the early years of the project, first RTP relay application that helped to use the SIP server with devices behind NAT
  • Ovidiu Sas – author of a few modules such as qos, xhttp_rpc or xhttp_pi, contributor to many other components, including the SDP parser
  • Sergey Safarov – significant work for RPM packaging and Docker images, with many contributions to the C code as well
  • Alan Duric – as the CTO of Telio during the 2000s, he was among the firsts to use the project for offering telecommunication services using IP network
  • Atle Samuelsen – one of the longest community member, a common presence at Kamailio events and an avid promotor of the project
  • Camille Oudot – contributions to many components like IMS extensions, tcpops or http_async_client as well as the tlsf memory manager
  • Seudin Kasumovic – author of erlang module, with contributions to other components such as exec, mtree or siputils
  • Marc Spencer – the initial author of Asterisk project, without an open source media server and PBX, a SIP proxy wouldn’t be enough for rich telephony services over IP
  • Anthony Minessale II – the main author of FreeSwitch, together with Mike Jerris  and Brian West succeeded to develop a flexible and extensible media server that is used together with Kamailio in many deployments
  • Matt Jordan – for many years the lead developer and project manager of Asterisk, he succeeded to create a friendly collaboration ecosystem between the major open source VoIP projects, facilitating knowledge exchange and a closer integration between these applications
  • Carlos Ruiz Diaz – ver active for a few years, contributing the cnxcc (prepaid) module, with contributions to presence, dialog and IMD extensions
  • Cesc Santasusana –  a member of the management board of the project in the mid 2000s, active developer to important components related to TLS and security
  • Alex Hermann – long time active developer with over 200 commits, touching the core and many modules: uac, tm, dispatcher, jansson, mqueue, dialog, dmq, …
  • Alfred E. Heggestad – mainly known the author of baresip project, which offers BSD-licensed SIP library and softphone, facilitating the development of mobile apps for VoIP, he also contributed to SER-Kamailio project over the time, writing the prefix_route module, enhancing the the code for TCP or nathelper

Likely I forgot some names, sorry if it is you, just contact me – 20 years is a long time frame, not easy to remember everything, thus there might be a follow up soon.

Stay tuned for new episodes in the 20 Years Of Kamailio series, I am also planning new ones not necessarily related to people!

Many thanks for those that contributed to make Kamailio better along all these 20 years!

Do not forget to reserve the dates in your calendar for Kamailio World Online 2021, a completely free live event with presentations, open discussions and the celebration party:

Thanks for flying Kamailio!