The Liblouis software suite provides an open-source braille translator, back-translator and formatter for a large number of languages and braille codes.
It is a set of libraries designed for use in any of a number of applications, both free and commercial.
It is written in C so that it does not require a runtime environment and hence can be used in applications written in high-level languages such as Java and Python.
Liblouis is based on the translation routines in the BRLTTY screenreader
This is free and open source software.
Key Features
- Support for computer and literary braille.
- Contracted and uncontracted translation for many languages.
- Hyphenation support.
- New languages can easily be added through tables that support a rule- or dictionary based approach.
- Tools for testing and debugging tables are also included.
- Supports math braille (Nemeth and Marburg).
- Supports screen-reading programs.
Website: github.com/liblouis/liblouis
Support:
Developer: Christian Egli, Mesar Hameed, Bert Frees (John J. Boyer is the founder and original author)
License: GNU Lesser General Public License v2.1

Liblouis is written in C. Learn C with our recommended free books and free tutorials.
Related Software
| Screen-readers | |
|---|---|
| Orca Screen Reader | Screen-reader which provides access to applications and toolkits |
| Liblouis | Braille translator, back-translator and formatter |
| Speakup | Kernel-based speech synthesizer driver suite |
| BRLTTY | Provides access to the console using a refreshable braille display |
| Emacspeak | Emacs extension that provides spoken output |
| Odilia | Rust-based screen reader |
| SBW | Text editor with support for braille input |
Read our verdict in the software roundup.
| Universal Access Tools | |
|---|---|
| Orca Screen Reader | Scriptable screen reader |
| Liblouis | Braille translator, back-translator and formatter |
| Florence Virtual Keyboard | Extensible scalable virtual keyboard |
| Speakup | Kernel-based speech synthesizer driver suite |
| BRLTTY | Gives a braille user access to the text consoles |
| Maliit | Virtual keyboard implemented as a plug-in for Maliit Framework |
| Julius | Two-pass large vocabulary continuous speech recognition engine |
| Emacspeak | Emacs extension that provides spoken output |
| Mouse actions | Execute commands from mouse events |
| squeekboard | Keyboard-shaped input method supporting Wayland |
| GOK | GNOME On Screen Keyboard |
| CoreKeyboard | Simple virtual keyboard with word suggestions |
| Dasher | Graphical predictive text input system |
| borse | Practice braille, Morse, semaphore |
Read our verdict in the software roundup.
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