Chrome Lighthouse Alternatives

GTmetrix is free, web-based website performance monitoring tool. With GTmetrix you can see how your site performs, reveal why it's slow and discover optimization opportunities.

Pingdom is a web-based tool for monitoring website performance and availability. Their service is used by over 30,000+ users including startups and 60% of the Fortune 500 companies. Pingdom can help digital marketers understand the impact performance has on reach and sales, or web developers and devops teams to identify bottlenecks and monitor impact of their latest push to production.

StatusCake is a web-based tool for uptime and performance monitoring of websites. The tool is both quick and easy to setup and provides and provides a free-for-life plan for up to 10 websites, with extra functionality for paid subscribers. With StatusCake, website uptime can be monitored through a sophisticated UI and alerts can be sent to third-party applications such as PushBullet Slack, Telegram, Discord, and many more.

With WebPageTest you can run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.