Hexometer is described as 'Monitors website health and performance in real time, detects anomalies with AI tools, delivers instant alerts, and provides actionable improvement insights' and is a SEO tool in the network & admin category. There are more than 25 alternatives to Hexometer, not only websites but also apps for a variety of platforms, including Windows, SaaS, Mac and Linux apps. The best Hexometer alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try Xenu's Link Sleuth or SEO Tracer. Other great sites and apps similar to Hexometer are Screpy, Screaming Frog SEO Spider, Netpeak Spider and KWT Spider.
TechSEO360 essentially offers crawling of huge websites, collects and shows just about any technical SEO related information you want and can create all types of sitemaps including XML with hreflang information, image, video and HTML/CSS/Javascript.
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