LiveCaptions

github.com/abb128/LiveCaptions Linux Apps Open-source projectOpen source

LiveCaptions displays live captions on the Linux desktop, according to its repository.

github.com/abb128/LiveCaptions
LiveCaptions homepage screenshot

About LiveCaptions

LiveCaptions is an open-source Linux desktop application that provides live captioning for desktop or microphone audio. It runs locally, using the aprilasr library for realtime speech recognition, and the project states that audio is never sent anywhere and that it does not rely on proprietary services or libraries. Captions can be styled by adjusting font, font size and text casing, with optional token-level confidence text fading.

The application currently supports only English; other languages may produce gibberish or a bad phonetic translation. Caption accuracy is not guaranteed and the project advises against relying on results for anything critical or important. It requires a somewhat-decent CPU for realtime captioning, especially alongside other tasks; a GPU is not required or used. It is distributed as a repository with build instructions and is licensed under GPL-3.0.

Key features

  • Captions desktop or microphone audio locally, without sending audio anywhere
  • Adjustable font, font size and text casing
  • Optional token-level confidence text fading
  • Built on aprilasr, a realtime speech recognition library
  • No proprietary services or libraries required
  • English-only recognition; other languages may produce gibberish
Best for: Linux users with a capable CPU who want live captions for desktop or microphone audio processed on their own machine.
Good for
  • Open source under the GPL-3.0 license
  • Audio is captioned locally and never sent anywhere
  • GPU not required or used
Watch out for
  • Only English is supported currently
  • Captions may be inaccurate, including with numbers, and are not advised for critical use
  • Realtime captioning requires a somewhat-decent CPU

LiveCaptions at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
Linux
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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LiveCaptions FAQ

Does LiveCaptions support languages other than English?
No. Only English is supported currently, and other languages may produce gibberish or a bad phonetic translation.
Is the captured audio sent to a server?
The project states that audio is captioned locally and is never sent anywhere.
Does LiveCaptions need a GPU?
No. A GPU is not required or used, but a somewhat-decent CPU is needed for realtime captioning.
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