SISTRIX - SISTRIX toolbox is an SEO tool for professionals helping reputable companies to constantly improve their websites.
TinyJPG - Compress JPEG images with perfect quality and file size
Page Weight - Find and fix heavy images on your website
Promo Instant Image Resizer - Automatically optimize images for web & social media (free!)
PageSpeed Ninja - One-click page speed boost for WordPress
Compressor - Compressor adds power and flexibility to Final Cut Pro X export.