Open-source keyboard firmware for Atmel AVR and Arm USB families

Node.js Desktop Automation.

A small speech recognizer

A Firmware-Only USB implementation for Atmel's AVR Microcontrollers

Open-source braille translator and back-translator.

Open-Source Large Vocabulary Continuous Speech Recognition Engine

Multifunctional Windows productivity tool for programmers and other power users

eSpeak NG is an open source speech synthesizer that supports 101 languages and accents.

An open-source library providing complete braille transcription services for xml, html and text documents

Use a Teensy board as a chorded USB keyboard

Hand-held Chorded Keyboard with 10 Micro-switches

teletext closed captioning decoder (produces subtitles in SRT format from transport stream)