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Open JTalk vs Parolu: catalog facts
Open JTalk	Parolu
Free Free under the Modified BSD license; the listed voice is under CC-BY-3.0.	Free Free and open source under the GPL 3.0 or later.
Linux, Command line	Linux
Converts Japanese text to speech Provides compiled dictionaries in several encodings	Simple interface for reading text aloud Includes Esperanto voices out of the box
The project site documents Linux support The listed HTS voice is from 2012	Voices for most languages must be downloaded first Project documentation is mainly in German
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0-or-later
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 8, 2026	Official website Full listing and sources Checked October 1, 2026

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