About 6 months ago I created https://orangefren.com/.
Also available at http://rnwis2whetqcj4oknksnc5l24jbh33nflunifff3xtjjonnoxu3ld6id.onion/.

OrangeFren.com lets you quickly compare the rates among instant, KYC-free, exchanges trading Bitcoin (including on Lightining), Bitcoin Cash, Ethereum, Litecoin, Monero, USDC and USDT.

The comparison takes into account the amount you're willing to trade and (by default) your region.

At this point the site queries about a half a dozen exchanges, none of which require a sign up.

For trades from Bitcoin into Monero the site also shows atomic swaps when their rate is better than that of instant exchanges.

We also partnered up with some of our best exchanges to offer the OrangeFren Guarantee - a security deposit provided to us by the exchanges to compensate our users in cases of disputes with the exchanges.

The specifics vary depending on the exchange, but the most common points include compensation to the user if an exchange runs off with their money, doesn't respond to their messages, lies about the previewed exchange rate or when the user is asked to answer KYC or SoF questions and passes the verification.

You can also use our service through our Telegram bot: https://orangefren.com/bot/telegram. It has the same functionality as OrangeFren.com with the added ability to request price alerts delivered through a DM straight to your inbox.

I look forward to hearing your thoughts and feedback!