Open-source accessibility

5 accessibility whose code is public under an OSI-approved license, rated for privacy with evidence. Picks first, then by score.

1. eSpeak NG Grade B

   Open source speech synthesizer supporting more than 100 languages and accents, used as a text-to-speech engine by screen readers such as NVDA and Orca.

   GPL-3.0. Source code

2. NVDA Grade B

   Free, open source screen reader for Windows that reads screen content aloud by speech or braille display. Developed by the Australian non-profit NV Access.

   GPL-2.0-or-later, with two exceptions for linking. Source code

3. Orca Grade B

   Free, open source screen reader for Linux desktops that gives access to applications through speech and braille, using the AT-SPI accessibility framework. Part of the GNOME project.

   LGPL-2.1. Source code

4. Speech Note Grade B

   Open source Linux app for taking, reading and translating notes with offline speech-to-text, text-to-speech and machine translation. Processing runs locally on the computer.

   MPL-2.0. Source code

5. Vocalinux Grade D

   Offline voice dictation for Linux on X11 and Wayland that types speech into the focused app. Speech recognition runs locally with engines such as whisper.cpp and VOSK.

   AGPL-3.0. Source code

Compare all 6 accessibility, open source or not.