Are there any assistants that aren't connected to the web? Or at least aren't by default. Here are some things I'd love to be able to do that don't need the web.
Set a timer
Set a reminder for something in X minutes
Take a voice note
Create lists (maybe could be pushed to phone via bluetooth)
Maybe some home auto stuff
I imagine most of this stuff could be shared to my phone via bluetooth if I needed it on the go (like a shopping list).
The biggest challenge is the voice recognition. There are a variety of open source projects. The Mozilla one is likely the most promising option at the moment. Kaldi and Sphinx are a couple of others. It's probably fair to say that nothing in the space is a "product" at the moment and would likely require a full PC to run as well.
I played around a bit to see if I could put together a standalone timer but didn't get very far.
If you want to roll your own server I believe there is a plugin for Home Assistant that can take voice input. https://home-assistant.io/
But I don't think either the Echo or the Google Home will connect to that. If you are running home assistant on a raspberry Pi, you could probably build that right into your own speaker.
This is awesome. Thank you for pointing me in this direction. This kind of corpus is going to be extremely important to getting a more diverse array of voice applications out there in the open.