Top SIP GitHub Repositories & Tools (2026)

Open-source realtime voice agent server in Go with WebRTC (WHIP), barge-in, streaming STT/LLM/TTS pipelines, plugin system, multi-language SDKs, SIP telephony, ESP32 support & fully local mode.

A PBX written by rust

Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. It features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing

Modern open-source multi-tenant PBX built on FreeSWITCH, Laravel and Vue. An alternative to FusionPBX, FreePBX and 3CX.

SIP Stack Rust library for building SIP applications

Modern and flexible SIP/VoIP cli tool

baresip library based SIP client for Android

MikoPBX — free open-source PBX for small business, built on Asterisk 22, PHP 8.4, and Phalcon 5. Deploy as ISO, Docker, LXC, or in the cloud.

Linphone.org mirror for linphone-android (https://gitlab.linphone.org/BC/public/linphone-android)