Reveal CSS animation as you scroll down a page.
https://github.com/matthieua/WOW
JavaScript Libraries and Functions
Get access to data on 4,279,414 websites that are WOW Customers. We know of 2,172,013 live websites using WOW and an additional 2,107,401 sites that used WOW historically and 1,165,416 websites in the United States.
Get a list of 4,279,414 websites using WOW which includes location information, hosting data, contact details, 2,172,013 currently live websites and an additional 450,773 domains that redirect to sites in this list. 2,107,401 sites that used this technology previously and 1,165,416 websites in the United States currently using WOW.