Must-Have WordPress Plugins - Broken Link Checker

This WordPress plugin locates broken links, missing images, deleted YouTube videos and more on your blog. It periodically checks older content and always checks new or edited content. It also gives you a list of all your links that you can search and filter.

Website: http://w-shadow.com/blog/2007/08/05/broken-link-checker-for-wordpress/

Once you've installed and activated the plugin, you can find it under "Tools" in your WordPress dashboard. It lists your broken links:

If you put your mouse of the each link, you can see your options to either fix the link, remove the link or set it to not broken.

You can also see redirected links and finally, it lists all your links (with their status), so you can make any edits quickly and easily: