So, there are a lot of sites on the market keeping track of the value of our tokens. Of course coinmarketcap.com is most used. But I don't like it that much. On the homepage there is just too little information and I can't keep track on my portfolio.
I don't like the tracking by coinmarketcap either, often they even show wrong information and it's not comfortable to use it. I prefer tracking by CryptoCompare, I set there my portfolio there and I am checking it almost everyday.