There are lots of Plugins which can be used to Increase the Speed of the WordPress Blog. But there is a Unique Plugin which is not known by many which also helps to speed your WordPress Blog by removing old plugins from Database. The name of the plugin is Plugins Garbage Collector.
It says “It scans your WordPress Database and shows what various things old plugins (which were deactivated or Uninstalled left in it. Cleanup is available.
Actually the website scans your Whole WordPress database and shows you a table of all the plugins of your site. There you will find lots of Green and red rows. The red are the Old deactivated and deleted plugins those are still in the Database and slow the loading of the site. Some plugins after removal, still leave some tables in the database. This plugin will cleanup all of them and delete them.
Download from here- Plugins Garbage Collector