Development Plugins

FTP Plugins: WP Easy Uploader / My FTP / others (wordpress.org/extend/plugins/myftp/)

WP Security Scan (wordpress.org/extend/plugins/wp-securit...

Exec-PHP (wordpress.org/extend/plugins/exec-php/)

WP-DB-Backup (wordpress.org/extend/plugins/wp-db-back...

Developer Plugins

Anti-Spam: Akismet / WP-SpamFree / Bad Behavior / Minimum Comment Length

Comment Captcha: Math Comment Spam Protection / WP Captcha / WP Clickcha

Search Everything (wordpress.org/extend/plugins/search-eve...

WP Super Cache (wordpress.org/extend/plugins/wp-super-c...

WP-Optimize (www.ruhanirabin.com/wp-optimize/)

Stats: Google Analytics for WordPress / WordPress.com Stats / others

Blog Metrics (wordpress.org/extend/plugins/blog-metri...

Feedburner: FD Feedburner Plugin (1st WP plugin) / FeedBurner FeedSmith Plugin (GOOGLE built and adapted to WP)

URL Absolutifier

RSS Footer / From RSS?

Yet Another Related Posts Plugin (YARPP)

WP Greet Box

Comment Redirect

Email Commenters

Users to CSV

SEO Plugins

All in One SEO Pack / Headspace 2 (wordpress.org/extend/plugins/all-in-one...

Google XML Sitemaps (wordpress.org/extend/plugins/google-sit...

Meta Robots (yoast.com/wordpress/meta-robots-wordpre...

WordPress SEO Pager / WP-Pagenavi / WP Pagebar

Yoast Breadcrumbs (yoast.com/wordpress/breadcrumbs/)

Permalink Migration Plugin / Redirection

Features for the End-User, Plugins

Subscribe to Comments / Tweet Comments

WordPress Threaded Comments (wordpress.org/extend/plugins/wordpress-...

TweetSuite / TweetBacks / Twitter ReTweet

FriendConnect (wordpress.org/extend/plugins/google-fri...

Contact Form 7(http://wordpress.org/extend/plugins/contact-form-7/)/ Enhanced Contact Form (yoast.com/wordpress/enhanced-wordpress-...

Sociable / Share-this (wordpress.org/extend/plugins/sociable/)

SlideShare WordPress Plugin (wordpress.org/extend/plugins/slideshare/)

Search Suggest (wordpress.org/extend/plugins/search-sug...

commentluv / keywordluv

SEO Automatic Links (wordpress.org/extend/plugins/seo-automa...