Open-source alternatives to Otter.ai
Looking to replace Otter.ai with something free and open-source? These 9 tools are the best open alternatives in 2026 — most are self-hostable, so you keep full control of your data and pay no subscription.
At a glance: how they compare
Click a column to sort — the best one depends on what matters to you.
| Alternative | Stars | Language | License | Last commit | In one line |
|---|---|---|---|---|---|
| Whisper | — | — | MIT | — | The reference open speech-to-text model, runs fully offline. |
| Vibe | — | — | MIT | — | Desktop app to transcribe meetings and files locally. |
| WhisperX | — | — | BSD-2-Clause | — | Fast Whisper with word timestamps and speaker diarization. |
| meetily | — | — | MIT | — | Privacy first, AI meeting assistant with 4x faster Parakeet/Whisper live transcription, speaker diarization, and Ollama summarization built on Rust. 100% local processing. no cloud required. Meetily (Meetly Ai - https://meetily.ai) is the #1 Self-hosted, Open- |
| Scriberr | — | — | MIT | — | Self-hosted AI audio transcription |
| natively-cluely-ai-assistant | — | — | — | — | Natively — Free open-source AI meeting assistant, interview copilot, and note taker. The best alternative to Cluely, Otter, Granola, Final Round AI, Fireflies, and Interview Coder. Real-time transcription, AI meeting notes, lecture recording, local RAG, BYOK, |
| VoiceStreamAI | — | — | MIT | — | Near-Realtime audio transcription using self-hosted Whisper and WebSocket in Python/JS |
| transcriptionstream | — | — | GPL-3.0 | — | turnkey self-hosted offline transcription and diarization service with llm summary |
| project-raven | — | — | MIT | — | Open-source AI meeting copilot - real-time transcription, echo cancellation, and AI assistance. Captures system audio + mic, cancels echo via WebRTC AEC3, transcribes with Deepgram, and gives you Claude/OpenAI help during meetings. Runs locally on macOS and Wi |
Which one should you pick?
Whisper
The reference open speech-to-text model, runs fully offline. Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
Vibe
Desktop app to transcribe meetings and files locally. Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
WhisperX
Fast Whisper with word timestamps and speaker diarization. Its BSD-2-Clause license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
meetily
Privacy first, AI meeting assistant with 4x faster Parakeet/Whisper live transcription, speaker diarization, and Ollama summarization built on Rust. 100% local processing. no cloud required. Meetily (Meetly Ai - https://meetily.ai) is the #1 Self-hosted, Open- Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
Scriberr
Self-hosted AI audio transcription Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
natively-cluely-ai-assistant
Natively — Free open-source AI meeting assistant, interview copilot, and note taker. The best alternative to Cluely, Otter, Granola, Final Round AI, Fireflies, and Interview Coder. Real-time transcription, AI meeting notes, lecture recording, local RAG, BYOK, Because it is self-hostable, your data can stay entirely on your own infrastructure.
VoiceStreamAI
Near-Realtime audio transcription using self-hosted Whisper and WebSocket in Python/JS Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
transcriptionstream
turnkey self-hosted offline transcription and diarization service with llm summary Its GPL-3.0 license keeps the project and its forks open-source forever, and commercial use is allowed. Because it is self-hostable, your data can stay entirely on your own infrastructure.
project-raven
Open-source AI meeting copilot - real-time transcription, echo cancellation, and AI assistance. Captures system audio + mic, cancels echo via WebRTC AEC3, transcribes with Deepgram, and gives you Claude/OpenAI help during meetings. Runs locally on macOS and Wi Its MIT license is permissive — free to use commercially, embed and modify. Because it is self-hostable, your data can stay entirely on your own infrastructure.
Switching from Otter.ai without the drama
- Export your data from Otter.ai first — most tools above can import standard formats.
- Run your top pick in parallel for a week or two before committing; self-hosted options can be tried locally in minutes.
- Migrate one team or one project at a time, keeping the old account read-only until everything checks out.
FAQ
What is the best open-source alternative to Otter.ai?
The top open-source alternative is Whisper — The reference open speech-to-text model, runs fully offline. The full ranked list is above.
Are these Otter.ai alternatives free?
Yes. Every tool listed is open-source and free to use; most can be self-hosted so you keep full control of your data.
Can I self-host an alternative to Otter.ai?
Most of these tools are designed to run on your own server or machine, giving you privacy and no subscription fees.
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