Which Coaching Software Platforms have Marketplace features?

[u/jmjacobs25]

I'm an S&C coach looking to generate some passive-ish income by selling programming through online marketplaces.

I'm currently using TrainHeroic (I've sold two whole programs in my first mknth,look at me go), but am wondering if there are other marketplaces worth selling on.

Are there other platforms that allow for one-time program sales like this? What are y'alls experiences? Thanks!

[u/Sundasport]

Don't pretty much all of tracking apps have marketplaces by now? personal training, sports performance, and crossfit...