Fixed Responsive Nav is a responsive, fixed and touch friendly one page navigation with animated scrolling.   Fixed

jQuery Sortable is a flexible, opinionated sorting plugin. It enables items in a list (or table etc.) to be sorted horizontally

WikiUp is a jQuery plugin which gets Wikipedia descriptions in tooltips.  

jTable is a jQuery plugin that is used to create AJAX based CRUD tables without coding HTML or Javascript.   It has several features

Swiper - is the free and ultra lightweight mobile touch slider with hardware accelerated transitions (where supported)

JointJS is a modern HTML 5 JavaScript library for visualization and interaction with diagrams and graphs. It can be used to create either static diagrams

FlexNav is a mobile-first example of using media queries and javascript to make a decent multi-level menu with support for

kGallery is a jQuery gallery plugin that has the ability to work stable with hundreds of pictures or with big pictures, without freezing

Autosize is a Small jQuery plugin to allow dynamic resizing of textarea height, so that it grows as based on visitor input. To use,

PhotoJShop is a JavaScript library for photo editing using the canvas, aiming to reproduce most usual filters.