This is a todo application that backed by Stor.IO. Stor.IO JavaScript library that provides an appStorage object that mirrors the localStorage API. Items set on appStorage are stored transparently to Stor.IO.
You can read more about Stor.IO here.
And demo the application here.
Want to create your own todo application? All you have to do is fork this project and host the pages on a webserver. Or just use Github pages, which is what I'm doing here.
That is all.