3 kB minified jQuery to ease your work with content tabs.
Super-smooth CSS transitions & transformations for jQuery.
You may also like Animate.css.
Transit link via Aleš Skotnica
Nice article about the classic dropdown menu problem – the one with the mouse cursor path. Even better, the post ends with a jQuery-menu-aim thingy :-)
Image Picker is a simple jQuery plugin that transforms a select element into a more user friendly graphical interface.
Ajax Autocomplete for jQuery allows you to easily create autocomplete/autosuggest boxes for text input fields.
A fully responsive and lightweight jQuery dateinput picker
A powerful slider for selecting value ranges, supporting dates and more.
Touch support included.
jQuery plugin for simple but powerful sprite based animations and panning
Shapeshift is like Masonry but with drag & drop. Touch support included.
Nice collection of jQuery plugins with search. (Though I would prefer tags.)
Nice work by Kiandra team.
Good lists – part 1, part 2 – by Smashing Magazine. As always, if you are looking for something more specific, try searching my Zootool bookmarks.
Trevor Davis made this plugin that allows you — surprise, surprise – to stick any element so it does not scroll off the view.
Quick and easy way to build your product tours with Twitter Bootstrap Popovers.
HTML5 Sortable is a jQuery plugin to create sortable lists and grids using native HTML5 drag and drop API.
Works in IE 5.5+, Firefox 3.5+, Chrome 3+, Safari 3+, and Opera 12+.
A super simple notification system for jQuery
Or you may like noty.
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
Nestable is an interactive hierarchical list. You can drag and drop to rearrange the order. It even works well on touch-screens.