ResponsiveVoice is a Text-To-Speech API supported in 51 languages. This cross-platform HTML5-based library is open-sourced for non-commercial and non-profit use. It includes speech synthesis and speech recognition SW designed to Voice-Enable websites and apps.
We've added 17 APIs to the ProgrammableWeb directory in categories including Marine, Transportation, Text-to-Speech and others. Included is an API from Pole Star that allows developers to track marine vessel navigation. Here's a summary of the new additions and how they could aid developers.