Mozilla has pivoted Vaani to be the Voice of IOT.   Vaani was originally an "on-device" virtual assistant for FirefoxOS.  Now they have 3 new projects related to creating a virtual assistant for the Internet of Things:

DeepSpeech: an open source speech recognition engine.  It is based off of Baidu’s research and which will use Google's TensorFlow machine learning framework.  It’s currently in early development.

Pipsqueak: a longer term goal to create a new speech recognition engine that implements cutting edge technology to allow Vaani to work completely off-line while still allowing for the high quality speech recognition users have become used to.

Murmur: a simple webapp for collecting speech samples to train speech recognition engines.  They want to slowly build a speech corpus to train their open source models.

One thing to note, is that although they want to create their own speech corpus, for now they are planning to use a purchased speech corpus for their acoustic models.