Four examples of open access text-to-speech tools, including one that also translates.

http://www.naturalreaders.com/index.html
http://text-to-speech.imtranslator.net (available in multiple languages) http://www.fromtexttospeech.com (available in multiple languages) https://text-to-speech-demo.mybluemix.net (with expressive SSML)

Via Shona Whyte