In this post I will list some well known and widely used jQuery plugins and extensions. Actually I want to maintain this list with “required” stuff to build sites using jQuery framework. I can’t and don’t want to hold here full list of plugins (actually it is already available on jQuery plugins page)  - instead I want to list “common” plugins that I and other developers / designers use on most of web sites. Please let me know if you use some cool plugin that you use all the time and I forget to list here.

• jQuery UI – “provides abstractions for low-level interaction and animation, advanced effects and high-level, themeable widgets”
• Form Plugin – “allows you to easily and unobtrusively upgrade HTML forms to use AJAX”
• Metadata Plugin – “extracting metadata from classes, random attributes, child elements and HTML5 data-* attributes”
• Validation Plugin
• Dimensions Plugin – “Extends jQuery to provide dimension-centric methods for getting widths, heights, offsets and more”
• Bgiframe Plugin - “Fixes z-index issues in IE6″
• Watermark Plugin – watermark capability to HTML input and textarea elements
• jReject Plugin – “jReject provides a simple, robjust, light-weight way to display rejections based on a the browser, specific browser version, specific platforms, or rendering engine”

to be continue…

Some additional useful plugins:

• http://plugins.jquery.com/project/lavalamp2 – LavaLamp allows you to add a nice background hover effect to HTML link lists using the Easing library.

Some more links on jQuery:

• http://www.tripwiremagazine.com/2009/09/95-exceptionally-useful-jquery-plugins-tutorials-and-cheat-sheets.html
• http://jqueryfordesigners.com/
• http://visionwidget.com/inspiration/web/398-latest-jquery-plugins.html
• http://www.tutorial9.net/resources/22-beautiful-jquery-plugins-for-web-designers/