Topmate
Topmate is a platform for paid 1:1 calls. Some of the features look similar to clarity.fm, which I have used for a number of years. Instead of paying by the minute like with Clarity and some other sites, you set a rate for sessions and create a landing page. They take a percentage fee for each call. Topmate has some additional features for selling subscriptions and webinars too. I could see this being useful for paid coaching calls. It also looks like a good option for people requesting calls to "pick your brain" to get them to pay something for your time and expertise.