AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
ScrollMagic - The jQuery plugin for magical scroll interactions.
SimilarSites - Easily find more sites like those you like.
WOW.js - Animate elements on-scroll to catch attention. Such Magic.
Top Similar Sites - Top Similar Sites helps you find similar, alternative or related sites to any website instantly.
Lax.js - Create beautiful & smooth animations when you scroll