jQuery ProQuo is a quick way to encourage your readers to spread your content through twitter. Simply define the regions in your markup that you would like to make “tweetable” and ProQuo will handle the rest.This jQuery plugin have a following features :

• Automatically determines proper text length and adds ellipsis in the tweet if the text needs to be truncated
• Includes a link back to the page that the quote was tweeted from (by default).
  Note: Twitter auto-shortens this link so they aren’t taking up more than 20 characters even if they appear longer in the tweet window.
• Adds a “Tweet this” link to the tweetable element
• Auto-loads the Twitter widgets script if it’s not already available on the page.

jQuery Raty is a plugin that generates a customizable star rating.

PushUp Content Bar is a smart and quick Sliding Content Bar jQuery Plugin that you can integrate easily in any website or web application. It is integrated seamlessly in your website and can be popped up whenever required. PushUp Content Bar is easy to customize and strong enough to rely upon.

jsLink is a awasome jquery link checker.  This is a broken links checker jQuery plugin, that can be easily plugin with in any web page.You have a web site with lots of web pages, each web page contains many images and links to other pages. You want to make sure that all links are working properly.

Broken links or dead links leave bad impact on  your web site user. To check that all links are working properly you can either check all the links by manually clicking every link or you can use some automatic process. As jquery Link Checker, jsLink helps you automatically check the broken links with just one click.