The best alternatives to SelectorsHub are Selector, Skeleton 2.0, and Jam API. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of SelectorsHub?
AssemblyAI— Speech-to-Text API with superhuman accuracy
Dizzle turns CSS selectors into functions that tests if elements match them. When searching for elements Features: * Full implementation of CSS3 & CSS4 selectors * Partial implementation of jQuery ext * Pretty good performance