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eSpeak NG vs TTS Util: catalog facts
eSpeak NG	TTS Util
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the Apache-2.0 license.
Windows, macOS, Linux, Android	Android
Supports many languages without large recorded voice libraries.	Reads text from input, clipboard or text files Can save synthesized speech as WAV files
Its synthetic voices sound less natural than recording-based speech systems.	Requires a separate Android text-to-speech engine Android only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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