jQuery.BlackAndWhite can easily convert any colored image into a black and white greyscale image. It uses the the HTML5 canvas tag and a fallback for the old browsers.  

Sticky-Kit is a jQuery plugin for making smart sticky elements. It provides an easy way to attach elements to the page when the user scrolls such that the element is always visible.   

jQuery.fullContent is a full window jQuery plugin.    jQuery.fullContent - Features:  Create fully containers with width and height of window Dynamic position: Each container could have vertical and horizontal position set History hash in URL Scroll animation between containers Simple configuration and easy use  

Fluidbox opens images seamlessly in a lightbox on your page without interruption. It was originally initiated as the author's personal challenge, with two simple aims — to replicate the distraction-free, fluid lightbox seen on Medium, and to improve on it such that it will allow linking to a larger-resolution image. The plugin deals with higher resolution, linked images elegantly, such that it only preloads them when users click on the thumbnails, therefore conserving bandwidth usage for your vi

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices. Powerful and easy to use.   Math.js - Features: Supports numbers, big numbers, complex numbers, units, strings, arrays, and matrices. Is compatible with JavaScript's built-in Math library. Contains a flexible expression parser. Supports chained operations. Comes with a large set

imagesLoaded detects when images have been loaded. You can check if the image has succesfully loaded, and use a callback function to trigger events after loading.  

Kwicks is a jQuery plugin providing sexy sliding panels with an emphasis on navigational interaction. Kwicks was originally a port of a MooTools effect (of the same name), but has since evolved into a highly configurable and versatile UI component.   

Zoomy is a quick and easy to integrate plugin that will zoom into any picture. It is a flexible zoom plugin and can be used with either, two copies of the same image, or one image linked to its self. Most CMS systems save or create multiple sizes of an image so its can be easily set up. Just link the larger zoom image on the smaller display image, and tell the plugin to use that link when zooming. It takes only a little bit of scripting.   Zoomy - Features: Zoomy Touch: working on touch devic

jQuery Upload File plugin provides multiple file uploads with progress bar. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.  

perfect-scrollbar is a tiny but perfect jQuery scrollbar plugin.   perfect-scrollbar - Features: It has some requirements, but doesn't change or add any style on original elements. It is designed not to have width or height. It's fixed on the right and bottom side of the container. You can change nearly all css styles of the scrollbar. The scrollbar design has no dependency on scripts. Supports 'update' function. Whenever you need to update the size or position of the scrollbar, just updat