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.   

Filterable is Bootstrap and X-editable themed jQuery plugin that preforms per-column filtering for an HTML table.  

Alpaca is the Easy Forms Engine for jQuery and Twitter Bootstrap. It is built around JSON schema to

jQuery Nested is a jQuery plugin which allows you to create multi-column, dynamic grid layouts. Unlike other libraries and jQuery plugins

Bootstrap-Maxlength uses a Twitter Bootstrap label to show a visual feedback to the user about the maximum length of the field