HodlBot
Here is a nifty little app for diversifying holdings on Binance into an index of the top 20 cryptocurrencies. Just sign up, plug your Binance API into you hodlbot account, and you're good to go. Currently the app rebalances your portfolio once per month, with a cap of 10%, weighted by market cap.
So, a top 20 index, rebalanced monthly, would have beaten BTC in % gains. This convinced me to take the easy way and sign up to use this handy little app.
I emailed the team and they have more options incoming, including weekly rebalancing and blacklisting coins you don't want to hold. Great stuff. And it's cheap! Makes diversification easy.
Check it out: HodlBot.io