jump.js is a small, modern, dependency-free smooth scrolling library.
Roll.js is a tiny javasript library to help you keep track of position, scrolling, and pagination.
Scrollgress is a simple, lightweight jQuery plugin used to display a progress bar at the top of the page that fills up as the user scrolls.
Horizon Swiper is a lightweight and free jQuery swiper plugin. It has many options and it works with your simple native browser scrolling.
A simple solution with jQuery to solve problems on long drop down menus. This technique is when you scroll down, the menu actually moved too.
jQuery.scrollable manages animated scrolling in windows, scrollable elements and iframes. It frees you from handling gotchas and edge cases and offers convenient, flexible options for animation.
Build 1MM row tables with native scroll bars by reusing and yielding nodes.
liMarquee is a jQuery plugin that allows you to move/scroll any web page elements - images, text, tables, form elements, etc. It's customizable news ticker / marquee plugin.
StickySort is a jQuery plugin for adding sticky headers and columns to your tables, complete with an extended sorting function
Enllax is an ultra-lightweight and super easy to use plugin for parallax scrolling effect.
MakeFixed.js is a jQuery plugin to dynamically set up elements to be fixed during scroll. It's lightweight and allows callback functions.
It highlights the scrollable area depending on the scrolling amount, thus efficiently explaining to a user what exactly can be scrolled, and is there much to scroll.