@RobinhoodApp has commission-free trades. I imagine they will only become more popular in the future; https://robinhood.com . It would be great to sync with them when their API becomes available. https://support.robinhood.com/hc/en-us/articles/210216823-Robinhood-API-Integrations
Nexo.io -- Not really an "exchange", but it's a crypto lending service where I transfer, hold and stake coins, so I want to be able to see the transactions to and from it in my portfolio.
Base network is now doing more transactions per second than ETH mainnet https://www.sushi.com/swap?chainid=8453
SIGEN - SIGEN.pro
SIGEN.pro - cryptocurrency trading platform. Is a platform for trading cryptocurrency for any fiat currency in the world. Trade on an exchange and earn money on fluctuations of exchange rates, save cryptocurrency, and exchange it for fiat money or other coins rapidly and with no intermediaries. You can do all this with minimum fees, high speed, automatic withdrawals and absolute security. With SIGEN, you don't have to wait, pay high fees and face the risk of running into conmen or being hacked. https://sigen.pro/static/api-doc/ https://sigen.pro/v1/web-public/statistic/ticker https://sigen.pro/vue/system-status - system status