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OpenReader vs Abogen: catalog facts
OpenReader	Abogen
Free Free and open source under the MIT licence; cloud TTS providers bill separately.	Free Free and open source.
Web, Self-hosted	Windows, macOS, Linux
Word-by-word highlighting during narration Audiobook export to M4B or MP3	Turns ebooks and text files into audiobooks Generates subtitles synced to the narration
Needs a separate TTS server or a paid cloud API Several moving parts to deploy, including a compute worker	Voice quality depends on the local TTS model Generating long books takes time on slower hardware
Self-hosted	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	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.