Open Utau
OpenUtau is an open-source editor for the UTAU community and singing synthesis, with setup guides and contribution instructions.
About Open Utau
OpenUtau is an open-source editor for the UTAU community and singing synthesis. It includes a MIDI editor for songs and covers, a vibrato editor, pre-rendering with built-in resamplers, and phonemizers for several phonetic systems and languages.
It imports VSQX (Vocaloid 4) tracks, supports ENUNU AI singers, and runs on Windows, macOS, and Linux. It provides only minimal mixing and does not replace a digital audio workstation, with selective UTAU compatibility and limited Vocaloid compatibility.
Key features
- MIDI editor for creating songs and covers
- Vibrato editor for vibrato adjustments
- Pre-rendering of vocals before playback for preview
- Built-in WORLDLINE-R resampler with curve tuning
- Phonemizers for VCV, CVVC, Arpasing and other systems
- Imports VSQX (Vocaloid 4) tracks
Best for: UTAU community members creating songs and covers with singing synthesis.
Good for
- Open-source under MIT license
- Runs on Windows, macOS, and Linux without changing system locale
- Compatible with most UTAU resamplers and includes plugin system
Watch out for
- Provides only minimal mixing and does not replace a digital audio workstation
- Does not aim for Vocaloid compatibility except for limited features
- Offers selective backward compatibility and does not replicate UTAU exactly
Open Utau at a glance
- Website
- github.com/stakira/OpenUtau
- Category
- Music & Audio › Audio Editing & Production
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Open source
- Yes · Source code
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Open Utau FAQ
Does OpenUtau replace a digital audio workstation?
No. It can do very minimal mixing but will not replace a digital audio workstation of choice.
Do I need to change my system locale to use it?
No. Unlike UTAU, there is no need to change system locale to use OpenUtau.
Is OpenUtau fully compatible with UTAU and Vocaloid?
No. It has selective backward compatibility with UTAU and does not aim for Vocaloid compatibility except for limited features.
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