iSpeech's open source javascript SDK for text to speech (TTS API), enables you to easily create Web applications using human quality iSpeech generic text to speech voices and custom/celebrity text to speech voices. The text to speech API powering this text to speech SDK supports nearly 30 languages and accents, with many languages having multiple voices. iSpeech is a viable alternative to Google TTS via embedded in browser (Chrome only) or Google's Translate API (paid), or others that do not offer a Javascript SDK to our knowledge. -Currently this SDK has been tested and works on Chrome and Firefox, but not Internet Explorer (IE) or Safari - (has not been tested on Opera browser) *you may need to contact iSpeech to create or access custom text to speech voices or celebrity text to speech voices **if you do not have an iSpeech account and need to test, you may request credits *** iOS, Android, Java, .NET, Python and other SDKs are also available