DOCOMO's Text to Speech API accepts inputted text in English, Katakana or Hiragana, and translates this into a natural sounding spoken voice. The API can be integrated into a Java application using the DOCOMO Text to Speech Java SDK.
Cloud-based messaging app Telegram provides free, open and secure communication across any platform with automatic chat synching across devices. Telegram also provides a dedicated Bot API for building custom bots that users can interact with via messages and commands to perform predefined tasks.
Response Tap, leader in voice-centric marketing technology, recently released the Response Tap API. The Response Tap API enables developers to include Response Tap's number provisioning, call features, and reporting features within third party apps. Response Tap's proprietary software allows companies to track a caller's actions on a website before, during, and after a call. Such tracking technology provides better understanding of marketing activities.