Pipecat leads open-source voice AI orchestration with 14,952 stars — LiveKit Agents close behind at 13,562

Asked:

“Do a search on Github and find all the most popular voice AI open source orchestrators.”

Eleven verified open-source GitHub projects for orchestrating real-time voice agents and speech-to-speech pipelines, ranked by stars pulled from GitHub’s repository API on 2026-09-01. Eight are core orchestrators or platforms; three are adjacent reference or media layers whose stars measure a different scope.

Core orchestrator / platformAdjacent reference or media layer

Pipecat and LiveKit Agents were also the two most consistently cited projects in a second broad discovery pass — 103 and 97 distinct source-page mentions — ahead of FastRTC (52), Dograh (43) and Bolna (37). github.com

Three of the top five by stars are adjacent, not core: Hugging Face Speech-to-Speech (12,996) is a reference pipeline, OpenAI Realtime Agents (6,971) shows OpenAI-specific agent patterns, and FastRTC (4,625) is lower-level WebRTC/WebSocket plumbing. github.com

Dograh is the fastest-rising self-hosted platform in the shortlist at 5,548 stars — already ahead of the longer-established Vocode Core (3,787). github.com

The tail of smaller self-hosted platforms — Patter (1,040), Bolna (746) and Rapida Voice AI (719) — trails the leaders by more than an order of magnitude. github.com

Ranked shortlist

#	Repository	Scope	Best fit	Stars	Mentions	Link

Method: “most popular” means current GitHub stars from GitHub’s repository API on 2026-09-01, cross-checked against repeated discovery mentions and orchestration relevance. Two broad GitHub/web discovery passes returned 1,536 and 1,304 URL-deduplicated results (with overlap), plus curated framework lists and direct repository pages; 11 repositories verified, one null row (rustpbx) dropped. Excluded: closed SaaS products, standalone STT/TTS models, single-purpose bots, tutorials and starter apps. Stars measure awareness, not latency, production reliability or architectural fit.

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