rasonyang / ai-native-callcenter

Self-hosted AI call center: AI talks, code controls the call. AI agents answer every call; humans take over without dropping it. Runs on FreeSWITCH with your SIP trunk and realtime model (OpenAI, Grok, Qwen, Doubao, or any compatible gateway). API-first, with a built-in agent desktop.

dograh-hq / dograh

Open source voice AI platform. Self-hosted alternative to Vapi and Retell. On Prem, BYOK across Speech to Speech or LLM/STT/TTS, with a visual workflow builder, MCP native and telephony support.

signalwire / freeswitch

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.

mikopbx / Core

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.

rasonyang / freesbc

One binary, one YAML file. A pure-Go Session Border Controller that keeps FreeSWITCH or Asterisk off the public internet: SIP proxy, RTP/SRTP relay, WebRTC gateway, built-in SIP security.

wiringai / mod_earshot

FreeSWITCH module that streams live call audio to AI voice agents over WebSocket and plays their voice back — full-duplex.

fonoster / fonoster

The AI that answers the phone.

kamailio / kamailio

Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms, focusing on flexibility, security and scalability

google / mobly

E2E test framework for tests with complex environment requirements.

rapidaai / voice-ai

Rapida is an open-source, end-to-end voice AI orchestration platform for building real-time conversational voice agents with audio streaming, STT, TTS, VAD, multi-channel integration, agent state management, and observability.

twilio / twilio-csharp

Twilio C#/.NET Helper Library for .NET6+.

twilio / twilio-java

A Java library for communicating with the Twilio REST API and generating TwiML.

voygr-tech / placecall

The phone is your last API. Give your agent a voice to call any US business - reservations, inquiries, quotes. Verified outcome + transcript. First 250 calls free.

oss-codes / flashvad

FlashVAD is a small causal voice-activity detector and integration toolkit for low-latency voice calls. It emits one speech probability every 10 ms

Dhangofa / NetToggle

NetToggle brings advanced cellular network controls to Android Quick Settings. Switch between 5G Only (SA/NR), 4G/LTE Only, Preferred 5G, Preferred 4G, Preferred 3G, and 2G Only. Build custom tile cycles, target one or both SIMs, create shortcuts, use secure broadcast automation, restore preferred modes, and diagnose failures using Root or Shizuku.

sidinsearch / AgentCall

Let your AI make real phone calls from your own phone . Cellular call gateway for Android, Windows, Linux, Hermes, and OpenClaw.

arbazsiddiqui / voxlock

The best performing voice isolator there is. Keeps the caller's voice and removes the other voices in the room before speech-to-text hears them. Open source, streaming, runs on CPU and in the browser. pip install voxlock

DINAKAR-S / voice-agent-starter-kit

Self-hosted multilingual (English + 5 Indic) phone voice agent template - LiveKit Agents + Sarvam STT/TTS + OpenAI + Vobiz SIP. ~700ms-1.2s latency, under Rs 5.5/min. Demo: a real-estate site-visit booking agent.

baresip / baresip

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

AminBlg / kaller

Make and receive phone calls through a paired Bluetooth phone, from your KDE desktop