Free SEO Tool Software – Screaming Frog. Now Rank UP! The free SEO Tool Software – Screaming Frog is a small desktop program you can install on your PC or Mac that spiders websites’ links, images, CSS, scripts, and apps from an SEO perspective. It fetches key onsite page elements for SEO, presents them in tabs … Continue reading Free SEO Tool Software – Screaming Frog. Now Rank UP!