How they compare
OnlyFans is the biggest creator platform: you subscribe to individual creators for their posts, messages and paid extras, and almost every creator is there, though there's little built-in browsing.
Clips4Sale, founded in 2003, is a marketplace of creator and small-studio stores selling fetish and kink clips one at a time, plus custom videos and the C4S+ streaming subscription with 100,000+ videos from 1,000+ stores.
OnlyFans suits people who follow particular creators; Clips4Sale suits anyone hunting a specific fetish.