FreeTTS is a speech synthesis system written entirely in Java. It is based upon Flite, a small runtime speech synthesis engine developed at Carnegie Mellon University. Flite is derived from the Festival Speech Synthesis System from the University of Edinburgh and the FestVox project from Carnegie Mellon University.

FreeTTS is a speech synthesis engine written entirely in the Java programming language. FreeTTS was written by the Sun Microsystems Laboratories Speech Team and is based on CMU's Flite engine. FreeTTS also includes a partial JSAPI