The AngularJS PHP angular-wp-api SDK by Jeff Sebring is an AngularJS client library to use in association with the WP-API. The AngularJS API allows developers to access and integrate the functionality of AngularJS with other applications and to create new applications.
Oddcast, innovative web and mobile marketer, has released a cloud based text-to-speech (TTS) API: Vocalware. Releasing the platform via API allows developers to extend TTS to any browser-based or mobile application. Vocalware intends to become the one stop shop for cloud based speech functionality.