Realtime bitcoin transaction amount graph http://jdrews.github.io/bitology/
Listens to transaction details from https://toshi.io/ and graphs transaction amounts over time. Written in JavaScript and uses d3.js for graphing.
toshi.io service was sunsetted on Dec 15th 2016 so this app won't work anymore as it remotely connected to the wss://bitcoin.toshi.io/ service to receive bitcoin transactions.
https://developers.coinbase.com/blog/2016/10/31/sunsetting-toshi