twolistboxes is a jQuery plugin with two list box method for extended selection of options.
Image Cropper is an awesome jQuery image cropping plugin. It is a cross browser that support touch events.
autoComplete is an extremely lightweight completion suggester plugin for jQuery that is used in production on Pixabay.com.
jQuery-flexImages is a lightweight jQuery plugin for creating fluid galleries as seen on Flickr and Google Images.
tagEditor is a powerful and lightweight jQuery tag editor plugin. It is compatible with jQuery 1.7.0+ in Firefox, Safari, Chrome, Opera, Internet Explorer 8+.
jQuery.my is a plugin for real time two-way data binding. It mutates object given as data source, reflecting interactions between user and UI. jQuery.my recognizes standard HTML controls as well as composite controls rendered by jQuery Mobile, nearly all jQuery UI widgets, Redactor, Ace, CodeMirror, Select2 and others.
selectize.js is the hybrid of a textbox and <select> box. It’s jQuery based autocomplete and native-feeling keyboard navigation; useful for tagging, contact lists, etc.