Voice Reader is not available for Linux but there are some alternatives that runs on Linux with similar functionality. The best Linux alternative is eSpeak, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Voice Reader and six of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Voice Reader are Intelligent Speaker (Freemium), Fala (Free, Open Source), Select and Speak (Paid) and NeoSpeech (Paid).
Fala - A simple text reader is an open source application. A simple software that speaks a text. You can type the text or appoint a file. Fala is just a frontend to festival. Its designed for GNOME, but if you have gtk, pyhton and festival you are able to run it.
Select and Speak uses iSpeech's human-quality text-to-speech (TTS) to read any selected text in the browser. It includes many iSpeech text to speech voices in different languages. You can configure the voice and speed options by changing the settings on the options page.