Ossian

Ossian is a python based tool for automatically building speech synthesis front ends.The framework consists of a sequence of utterance processors, each of which accepts and enriches an XML representation of an utterance. The framework is designed to be flexible so that the nature and  number of processors and their roles can be configured by a user. A range of processors are supplied by the system, but it is also relatively easy to code new ones.

[Download older static version] or find the latest version on GitHub