Highlight Active Menu Item On Page Scroll – MenuSpy.js
MenuSpy.js is a multi-purpose JavaScript library for your one page scrolling website that highlights the menu item relative to the currently visible section.
JavaScript & CSS scrollspy
JavaScript Library For Smooth Scroll And Scrollspy – js-navbar-scroll
js-navbar-scroll is a tiny JavaScript library used to create a top navigation that provides the smooth scroll and scrollspy experiences on your single page web application.
Effecient Scrollspy Library – AnchorTrigger
Just another scrollspy JavaScript library which automatically executes a callback function when the page is scrolled past specified anchors.
Minimal Scrollspy With Smooth Scroll JavaScript Library – scrollmenu.js
scrollmenu.js is a simple, flexible JavaScript library used for adding an active class to the nav items when you scroll past their sections.