| "code","name","aliases","usage" |
| "auto","autodetect","","" |
| "al","Alva","","braille device" |
| "an","Android","","OS-specific" |
| "bl","BrailleLite","","braille device" |
| "cb","CombiBraille","","braille device" |
| "en","eSpeak-NG","","software engine" |
| "es","eSpeak","","software engine" |
| "fl","FestivalLite","","software engine" |
| "fv","Festival","","software engine" |
| "gs","GenericSay","","pipes to /usr/local/bin/say" |
| "mp","Mikropuhe","","software engine" |
| "sd","SpeechDispatcher","","multi-engine server" |
| "sw","Swift","","software engine" |
| "th","Theta","","software engine" |
| "vv","ViaVoice","Voxin","software engine" |
| "xs","ExternalSpeech","","sends speech to external program and receives spoken position indexes" |
