1. Broken Link Checker — Automatically checks your posts for broken links and images and reports its findings in the dashboard. Its AJAX capabilities even allow you to fix the offending links without editing the posts!

2. WP-Project — This plugin adds lightweight project management to WordPress. If you want the ability to track clients, projects, and tasks from within your blog, this plugin is for you.

3. WP SEO Master — The WordPress SEO arena is usually dominated by plugins like All in One SEO Pack, but this plugin provides some unique functionality, including keyword autolinking and comprehensive noindex/nofollow options.

What’s on your top list of cool plugins that aren’t mentioned that often? Let us know in the comments!

This would also make a cool blog meme: if WordPress-using bloggers could post a list of plugins that they think should have more limelight, we could promote plugin authors’ works and help each other discover some cool plugins.

I’ll tag the following bloggers: Kyle at Hack WordPress, Richard at WP Project (not to be confused with the plugin listed above), and Ian at ThemeShaper. If others would like to participate, feel free to do so! (If you don’t blog about WordPress, perhaps you could discuss plugins related to your niche.) Just post your list on your blog, link to this post if you want to register a pingback, and then tag additional bloggers.