The WP Changes Tracker plugin allows you to track all your wordpress system changes in one centralized changelog.
The IssuuPress Wordpress plugin displays your Issuu catalog of PDF files in your wordpress posts/pages using a shortcode.
This free wordpress plugin displays the most recent twitter status updates for a particular hash tag in your posts/pages using shortcode.
Pixeline’s Email Protector plugin for WordPress prevents spambots from harvesting any email addresses put in your wordpress post or pages. Your wordpress users can simply write the email address “naturally”, (ex: john(Replace this parenthesis with the @ sign)doe.com) and the plugin will replace it in the html by a user-friendly instruction (ex: john(replace this parenthesis... Read more »
Yesterday i released a jquery plugin to create tabbed interfaces easily: simplyTabs . There are several existing outthere, but they were all bloated for my needs. See, i don’t need to download the jquery ui tabs 122k of code when i can achieve the same result with, 4kb unminified, js+css.