On the RHEL 10 desktop, the Orca screen reader helps ensure accessibility for users with a visual impairment. Orca is included in the default RHEL installation.

Orca reads information from the screen and communicates it to you using the following components:

Speech Dispatcher

Orca uses Speech Dispatcher to communicate with the speech synthesizer. Speech Dispatcher supports various speech synthesis backends and prevents messages from other applications from interrupting the messages from Orca.

Speech synthesizer

Provides a speech output. The default speech synthesizer is eSpeak-NG.

Braille display

Provides a tactile output. The BRLTTY service enables this functionality.