Top 8 C SIP Projects

freeswitch

3 2,968 8.9 C

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.
Kamailio

1 2,121 9.9 C

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -

Project mention: What's the use of fd passing? | /r/C_Programming | 2023-12-08

Multi-process server applications using a prefork model are one example. You might have one process dedicated to accepting new connections over the network and maybe doing an initial handshake, and then a bunch of worker processes handling the actual connections. Kamailio's CDP module is built like this (https://github.com/kamailio/kamailio/tree/master/src/modules/cdp)
WorkOS

workos.com
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The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
Asterisk

11 1,928 9.3 C

The official Asterisk Project repository.

Project mention: FreePBX – Open-Source PBX (PHP GUI for Asterisk) | news.ycombinator.com | 2024-03-11
pjproject

7 1,824 9.1 C

PJSIP project

Project mention: Hi, anyone used PJSIP for P2P connectivity (ICE) | /r/gamedev | 2023-12-06

Hello, I'm in the process of developing a multiplayer FPS game and recently delved into ICE connectivity (STUN/TURN). Currently, my setup involves a custom matchmaking server in C++, with UDP port handling on the client side through UPnP or a fallback custom relay server. While the current approach works well, I'm exploring options to simplify the project by incorporating existing technologies. I've come across Libjuice and Libpjsip for NAT traversal. Libjuice offers a nice and simple API, but it supports only one person. Hence, I'm considering Libpjsip. I came across their ICE demo script at https://github.com/pjsip/pjproject/blob/master/pjsip-apps/src/samples/icedemo.c and I'm curious about its performance, particularly the pj_ice_strans_sendto2 function. I'm keen to understand how it compares to my current implementation with Berkeley Sockets and whether Libpjsip is a suitable choice for multiplayer P2P games. Any insights or assistance would be highly appreciated. Thanks!
baresip

7 1,607 9.4 C

Baresip is a modular SIP User-Agent with audio and video support

Project mention: Baresip – An Open Source modular SIP User-Agent with audio and video support | /r/patient_hackernews | 2023-09-04
sngrep

2 935 6.5 C

Ncurses SIP Messages flow viewer
libjuice

2 361 7.2 C

JUICE is a UDP Interactive Connectivity Establishment library
InfluxDB

www.influxdata.com
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Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
tSIP

3 129 9.1 C

SIP softphone

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-03-11.