CoinGecko. CoinGecko is a cryptocurrency ranking site that assesses the world’s top digital currencies across a range of key criteria. https://www.coingecko.com
- Live coin watch
- Coin Checkup
Livecoinwatch.com is great because it has live tracking of all the coins you want to see all in one place.
Coingecko is pretty good, it actually has a lot of newer coins that don't get added to coinmarketcap until later on.