Festival is described as 'Offers a general framework for building speech synthesis systems as well as including examples of various modules. As a whole it offers full text to speech through a number APIs: from shell level, though a Scheme command interpreter, as a C++ library, from Java, and an' and is an app. There are more than 10 alternatives to Festival for a variety of platforms, including Windows, Linux, Android, Mac and Web-based apps. The best Festival alternative is NaturalReader. It's not free, so if you're looking for a free alternative, you could try NaturalReader or RHVoice. Other great apps like Festival are TextAloud, Mycroft Mimic, Gespeaker and Simple TTS Reader.