Useful Tools and Services category, have gorgeous articles about aplications, tools, services, websites, plugins and recipes that you can use to improve your blog and your blogger knowledge.
Automattic, the company behind WordPress, is moving into social networking, with the 1.0 launch of BuddyPress, an installable, open source software platform that runs on your own website. The software is freely available, and can be downloaded from BuddyPress.org.
WordPress CodeSniffer is a It is an essential development tool that ensures your code remains clean and consistent. It can also help prevent some common semantic errors made by developers.
BuySellAds is finally out of the private beta with such a huge list of new features that just made my life as an ads publisher a whole lot easier!, ok ok this a non Wordpress Article, but you should have in your site BuySellAds for really pro monetization service in your WordPress blog (or any blog engine).
The following are the plugins I found that can make WordPress more secure.
