Cryptoradar is a real-time cryptocurrency price comparison website that not only gives you the best price but also lets you compare various exchanges based on various features.
We currently support Bitcoin, Ethereum, Litecoin, Dash and Monero.
Bitdock is a lightweight OSX menu bar application that tracks the price index of Bitcoin in USD, GBP and EUR. I built it after being tired of constantly heading over to Coinbase or GDAX and I was unable to find an OSX application that was simply executed. I bodged this together in a few hours, so I'll be improving and adding new cryptocurrencies.