I started to build a thing (maybe an OpenAlexa) for this reason (glider5.com) - the goal was to eventually hook it up to STT and TTS and have it answer queries, with all the code being open. Right now it kind of looks like a dysfunctional wolframalpha - but where anyone can write the code to answer queries.
Not sure whether to just kill it or do something else with it, but it was a fun idea.
I've been playing with Mycroft and Jasper before for the purpose of having an assistant running on a PI but I stopped for different reasons. There is a need for a OpenAlexa assistant out there for privacy aware customers. My gf is pretty excited with the stories emerging around her friends who got Alexa. I'm pretty sure this will expand as an assistant becomes normal. But I don't want to have a Amazon employee at home.
Not sure whether to just kill it or do something else with it, but it was a fun idea.