Shopify Speed Optimization — Thunder Page Speed Optimizer

It is an open-source, automated tool for measuring the quality of web pages. It can be run against any web page, public or requiring authentication. It has audits for performance, accessibility and search engine optimization of web pages. It also includes the ability to test progressive web applications for compliance with standards and best practices.

Analyze your website speed and performance based on performance best practices and timing metrics. You can run it using Docker, test your site in Chrome and Firefox and graph the metrics in Grafana.

SpeedCurve gives you continuous feedback on how your front-end code is affecting the performance of your website. Get detailed build analysis and performance filmstrips for your own website and then benchmark your performance against the competition to make sure your website loads faster.

With Vortex IQ, your whole operation becomes connected, aware, and capable of taking action instantly, guided by an agentic operating system built for real-world commerce.

Atatus is a server and frontend monitoring SaaS, using which you can monitor the performance and track the errors of your app.

It is an all-in-one performance optimization service. It helps ecommerce, content publishers and web agencies achieve outstanding website speed optimization results.

Free test tools to check whether specific components of your website or server are operating properly, and to find out what your end-users are experiencing at any given time.

Qbaka automatically collects errors without user interation. Whenever error happen, it is collected by Qbaka and developers get maximum helpful data to fix the problem.

H2Fi is a free, all-in-one SEO Audit Tool that helps you analyze your website’s complete performance. It audits GA4 data, Google Search Console insights, Google Business Profile visibility, and all major On-Page SEO factors to show you exactly what your site needs to improve.H2Fi scans your site for technical issues, on-page SEO, speed, mobile performance, indexing, and Core Web Vitals. Using GA4 and GSC insights, it highlights opportunities and gives clear recommendations to improve rankings — completely free.

Complete SEO audits in 60 seconds. Automated crawling, PageSpeed analysis, and prioritized fixes.

Know the moment your site goes down. SiteRooster monitors your websites 24/7 for uptime, SSL certificates, domain expiry content changes & more for free.

Compare the display of your web design no matter the operating system, browser, and its version. Check your site for any visual bugs. Make complicated web testing easy.

It is an on-premise web crawler tool designed to help users scan websites for broken links, monitor search engine optimization (SEO) parameters and check technical configuration for errors. The platform comes with page title and meta tags analysis functionality, which lets professionals modify headlines and page descriptions to improve online indexing.