EdNon is an experiment into the IndexedDB APIs, and the implications of storing data on the client using async APIs. It also filled a need of mine at work, where I needed to keep track of the time I had spent on different tasks. With this, I was able to create as many timers and notes as I needed, without any extra menus.
All data is stored locally on the browser. There is no server behind this application (apart from the web server).