Thorsten-Voice is described as ': A free to use, offline working, high quality german TTS voice should be available for every project without any license struggling. It has also a really good explanation for the underlying Python TTS which can be used for TTS in other languages such spain or english' and is an app. There are more than 10 alternatives to Thorsten-Voice for a variety of platforms, including Windows, Linux, Web-based, Android and Google Chrome apps. The best Thorsten-Voice alternative is Balabolka, which is free. Other great apps like Thorsten-Voice are NaturalReader, eSpeak, TextAloud and eSpeak NG.