Play for Medium is described as 'Play is a text-to-speech reader for Medium articles, built as an extension for Google Chrome ' and is a Text to Speech Service in the category. There are five alternatives to Play for Medium for a variety of platforms, including Windows, Mac, Google Chrome, Linux and Chrome OS. The best alternative is Talkie, which is both free and Open Source. Other great apps like Play for Medium are Chrome Speak (Free, Open Source), ClipBoard Speaker (Freemium), Select and Speak (Paid) and TTSFox (Free).
New entry is automatically added w/ text copied from apps. New entry is automatically synthesized / spoken. Keep playing entries in listing when Continuous Play is enabled. Highlight spoken words while text is spoken, when option is enabled. etc.
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.