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OpenUtau vs NEUTRINO: catalog facts
OpenUtau	NEUTRINO
Free Free and open source under the MIT licence.	Free Free to download, with the project supported by crowdfunding and sponsors.
Windows	Windows
Open-source successor to UTAU Works with the UTAU voicebank ecosystem	Free singing voice synthesis Seventeen voice characters to choose from
Requires voicebanks and some setup before first use Documentation lives mainly in the GitHub wiki	Official site is mostly in Japanese Web version is still in alpha testing
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.