I recently destroyed my bitcoinorderbook.org instance as a part of cleaning up and organizing my various projects. This blog post will display the project instead of keeping a server running all the time.
Attached is a screenshot of the single page app. It is a consolidated order book chart of multiple Bitcoin exchanges done with Node.js and Vuejs. I did this project because one important piece of information when trading is order book volume - a piece that is often hidden from everyday users, and also hard to visualize when it is spread across hundreds of exchanges.