Screaming Frog SEO Spider
SEMRush
Moz
Website Checker Tech
Netpeak Spider
Sitechecker
Pulno
Xenu's Link Sleuth
DebugBear
GTmetrix
SpeedCurve
Wattspeed
Proxyman.io
PageSpeed Insights
Pingdom
HTTP Toolkit
Monitor the performance of your website and benchmark against the competition. Get alerted in Slack or by email when there's a problem.
Continuously test the speed of your website in a controlled lab environment and get in-depth reports to optimize your site. DebugBear is built on top of Lighthouse, but provides debug data that goes far beyond the basic Lighthouse report.
In addition to the lab data, DebugBear also keeps track of the real-user data collected by Google.
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SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
SpeedCurve - Monitor your front-end. Beat the competition
Website Checker Tech - WebsiteChecker.Tech is SaaS tool that detects SEO and availability issues of your website, making it easier for you to fix them.
Wattspeed - Wattspeed helps you measure and monitor the performance of your website.