MathCAT: Math Capable Assistive Technology for generating speech, braille, and navigation.

Windows CLAP plugins to capture audio from a specific application or device, or to send audio to a specific device.

♞ lichess.org: the forever free, adless and open source chess server ♞

Open-source braille translator and back-translator.

OSARA: Open Source Accessibility for the REAPER Application

NVDA, the free and open source Screen Reader for Microsoft Windows