Website Grader - Grade your website's strengths and weaknesses in seconds.
imgix - Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.
PageSpeed Ninja - One-click page speed boost for WordPress
Cloudimage - Cloudimage.io is the easiest way to resize, store, and deliver your images to your customers through a rocket fast CDN.
WebSite Auditor - The techie's SEO spider: find site issues other tools miss
Sirv - Dynamic image processing, hosting and rich-media for retailers and eCommerce.