The simply the best collection of popular scripts
This tiny (5KB, < 200 lines) jQuery Bootstrap plugin turns any DIV into a WYSIWYG rich-content editor. Drag and drop files to insert images, support image upload (also taking photos on mobile devices). Custom built toolbar. Supports mobile devices.
ProcessWire is a free PHP content management system and framework (open source CMS/CMF). It provides a powerful template system, an open source jQuery-inspired API and built-in user management. Lots of modules readily available.
The hybrid of a textbox and a select box. It's jQuery based and useful for tagging, contact lists, country selectors, and so on. Comes with LESS stylesheets and shims for Bootstrap. Remote data loading.
A cross-browser flip effect plugin for jQuery which allows you to flip (left, right, top, bottom and revert) whichever HTML element you want. Supports RGBA colors. Works for every modern web browser (IE 8+).
The ultimate security plugin that will take your WordPress security to a whole new level. Features a security points grading system, enable groups of security features, apply firewall rules progressively and more.
A plugin to automatically adjust textarea height.
Simple Database Abstraction Layer. The EasyDB PDO wrapper makes separating data from instructions and security easier.
A suite of modular libraries and tools which work together to enable rich interactive content on open web technologies via HTML5. Comprised of: EaselJS, TweenJS, SoundJS, PreloadJS, and Zoe.
A single place for developers to get started using jQuery Mobile. It includes icon files, robots.txt (and human).txt files, as well as an extensive snippets library that developers can use as reference.
A jQuery lightbox clone that supports images, videos, flash, YouTube, iframes and Ajax.