It's not that much different from CoinMarketCap If we exclude the GitHub, Twitter statistics. Even the charts look very identical. Few suggestions though:
1. A dark theme
2. In the bar, while searching, It should tell you when It's an exchange (and not a coin) instead of just autocomplete the name of exchange.
3. Even though you have filters, I guess it's wrong to set the ranking of coins by market cap. I rather see an algorithm that does the ranking based on multiple info (social media activity, ATMs count, userbase based on the number of wallets in some wallet providers etc.)
Also, I don't understand why some trading pairs are in blue (clickable) others are in black and others are in orange or greyed out while there is no explanation.
I actually prefer this over Coinmarketcap, just because you can see 1H, 24H & 7 Day changes on the front page.
The filtering option is a nice addition as well, I might just use this from now on instead of Coinmarketcap.
As OmegaStarScream has mentioned, adding a dark theme would be a good idea.
Coinmarketcap looks like a plain website compared to your site's U.I. which is pretty good if you want to be head to head with it. One thing I notice though is that their is a huge price discrepancy between you and coinmarketcap the biggest price difference I saw was BCH which coinmarketcap have at 168$ while yours is showing 175$ while most exchanges right now like Bitstamp, Coinbase, CEX.IO and Gemini have it at around 160$ which even though Coinmarketcap didn't hit it it is much more closer than 175$, so I got curious where are you basing your prices at?
Also one improvement I like to see is active prices on the main webpage, I think this way people would like use it as a ticker for them where they don't need to refresh it every time just to see the price movement. This will be helpful for a lot of traders if they want to see the price action and identify who is the fastest mover.
Your feedback mean a lot to us! Thank you so much. We have noted everything you wrote and will take the necessary steps to improve Chainsage.
