easyViewport is a jQuery plugin that simulates Mobile/Tablet/Desktop viewports to test how your webpage will look on a range of screen sizes/resolutions.
Google+ App Like Pullup Effect with jQuery and CSS3
Simple jQuery Viewport Plugin For Web - Porthole
jQuery Plugin To Detect If Elements Are In View - Viewport Detector
jQuery Plugin To Pan Html Element within Viewport - Porthole
Minimal jQuery Scroll Position Detection Plugin - Scroll Class
Test Responsive And Device-specific Viewports Using jQuery - easyViewport
jQuery Filters To Detect If An Elements Is Out Of View - Offscreen
jQuery Based Viewport Size And isTouch Checker - viewportInfo
Check If An Element Is In The Viewport - jQuery isvisible
jQuery Plugin To Check Whether An Element Is Within The Viewport - whenInView
Minimal Is In Viewport Check Plugin - jQuery inView
Add CSS Classes To Elements As In Viewport - in-viewport-class
Execute Functions After A Period Of Time - jQuery lazyLoad.js
jQuery Plugin For Detecting Elements In The Viewport - Visible.js
Check If Is Visible Within The Viewport - jQuery isOnScreen
Detect If An Element Is Visible - jQuery onScreen
Detect Visibility Change On DOM Element - jQuery HideShow
Easy Scroll Into View Plugin For jQuery - Scrollie
Execute A Fucntion When An Element Gets Visible - jQuery visibilityChanged
Add/Remove Classes When Scolling Pass An Element - ScrollPunch
Detect And Manipulate Element Visibility In Browser - VisibleElements
Get The Most Visible Element With jQuery - getMostVisible
Activate/Deactivate Elements On Scroll - jQuery Scrollza
Determine Element Visibility Percentage In jQuery - percentWithinViewport
Execute A Function If An Element Is Visible/Invisible - Visible.js
Fade In Elements When Visible - jQuery ScrollFade
Execute Code When A Part Of Your Element Becomes Visible - on-scrolled-to.js
Detect Most Visible Elements With jQuery - most-visible
Check If Element Is In View - jQuery inView
Listen For Scroll Events And Fire Functions With Direction - jQuery scrollfy
Determine How Far Your Element Is In The Viewport - jQuery scrollRelation
Check If Element Is In View And Apply CSS Class - jQuery scrollStuff