| Alva | |
| |Delphi (4nn)@ | |
| BrailleLite | |
| |@ | |
| CombiBraille | |
| |@ | |
| eSpeak | |
| |text to speech engine@ | |
| eSpeak-NG | |
| |text to speech engine@ | |
| ExternalSpeech | |
| |runs /usr/local/bin/externalspeech@ | |
| Festival | |
| |text to speech engine@ | |
| FestivalLite | |
| |text to speech engine@ | |
| GenericSay | |
| |pipes to /usr/local/bin/say@ | |
| Mikropuhe | |
| |text to speech engine@ | |
| Swift | |
| |text to speech engine@ | |
| Theta | |
| |text to speech engine@ | |
| ViaVoice | |
| |text to speech engine@ |