livekit / livekit

End-to-end realtime stack for connecting humans and AI

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.

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.