The MBROLA Project is described as 'The aim of the MBROLA project, initiated by the TCTS Lab of the Faculté Polytechnique de Mons (Belgium), is to obtain a set of speech synthesizers for as many languages as possible, and provide them free for non-commercial applications' and is a Text to Speech service. There are more than 10 alternatives to The MBROLA Project for a variety of platforms, including Mac, Windows, Web-based, SaaS and Xbox apps. The best The MBROLA Project alternative is NaturalReader. It's not free, so if you're looking for a free alternative, you could try NaturalReader or SpeakLine. Other great apps like The MBROLA Project are GhostReader, kurzweil 3000, SpeechParrot.app and Speakabo.
Thorsten-Voice: 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.
