LedgerX is now FTX.US Derivatives. That means there are now US-based options, futures, and swaps under the FTX.US brand.
This is one of the only platforms for crypto options and futures outside of CME futures and ETF products on the stock market. The platform currently offers both BTC and ETH products.
One of the biggest drawbacks with LedgerX has historically been its liquidity, although this is an issue even with the biggest players like Binance. Hopefully, the FTX brand being behind these products will help to grow the userbase and thereby increase liquidity!
TIP: FTX.US derivatives and FTX.US use different logins. So make sure to create accounts in both places to access both FTX.US platforms.