OmniVoice Studio: A Free, Local Alternative to ElevenLabs

An open-source desktop app that clones voices from a 3-second clip, supports 646 languages, and runs entirely on your machine. No accounts, no API keys, no per-character billing.

What it is

OmniVoice Studio is an open-source desktop application for voice cloning, voice design, video dubbing, audiobook creation, and dictation. It is licensed under AGPL-3.0 and positions itself as the open-source alternative to ElevenLabs.

The core promise is local processing. Everything runs on your machine. There is no cloud dependency, no account requirement, no API key, and no usage limit. You download the app for macOS, Windows, or Linux, load the models you need, and start working.

The default model supports 646 TTS languages. Zero-shot voice cloning works from a clean recording of approximately three seconds. Voice Design lets you build new voices from attributes like gender, age, accent, pitch, emotion, and dialect. Video Dubbing handles the full pipeline from upload through transcription, translation, speaker assignment, duration sync, and MP4 export.

Why it matters

• No recurring costs. Cloud TTS services charge per character or per minute. OmniVoice Studio has no per-use billing because it runs locally.
• Privacy by design. Audio never leaves your machine. For sensitive content like internal communications or personal recordings, this is a meaningful advantage.
• Zero-shot cloning from short samples. A three-second clean clip is enough to mirror a voice without training a custom model.
• Multilingual support. 646 languages covers a wide range of use cases, and the app explicitly supports both English and Vietnamese.

How it works

The Studio workspace handles voice cloning: drop a short audio recording into the interface, select the cloned voice, type your text, and click Synthesize Audio. The Voice Design screen lets you pick from archetype voices and adjust attributes to create a new voice you can save and reuse. The Video Dubbing workspace walks through the full pipeline: upload a video, transcribe, translate, assign voices to speakers, sync timing, and export the final MP4.

The comparison with cloud services is stark. On one side, a metered subscription with per-character pricing. On the other, a local app with no account, no API key, no cloud, and no usage limits. The audio stays on your device.

Caveats

This is an active beta. Output quality depends on the engine you select, your hardware, and the quality of your reference recording. You should expect bugs between releases, and heavier models will require a capable machine for reasonable processing speed.

The AGPL-3.0 license has implications if you modify the project and provide it as a network service or embed it in a closed product. Read the license terms carefully before building on top of it.