Here is the list of five very small but ultra-cool WordPress plugins you probably never heard about. 1. Google Ajax libraries API This plugin replaces the JavaScripts like jQuery, Moo tools and others which are usually loaded from your site, to load from Google instead. This has several key benefits. First is that you will use a lot less bandwidth, important for those paying for bandwidth. Then, your server will be relieved off some load (one less http request).