Sitespeed.io is described as 'Open source tool that helps you analyse and optimise your website speed and performance, based on performance best practices' and is a website monitoring tool in the network & admin category. There are more than 10 alternatives to Sitespeed.io for a variety of platforms, including Web-based, SaaS, Self-Hosted, Chrome OS and Mac apps. The best Sitespeed.io alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try GTmetrix or Request Metrics. Other great apps like Sitespeed.io are PageVitals, Upzilla, New Relic and Pingdom Website Speed Test.
Tracks uptime, downtime, and page speed with synthetic and real user monitoring, simulates critical flows, analyzes visitor data by location, device, and browser, sends instant alerts, and provides analytics and reporting to troubleshoot and optimize sites.
GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
Unified Web Performance that automatically tests your pages and tracks real user experiences. Automatically discovers your busiest pages and scans them weekly, providing actionable recommendations. Integrated Real User Monitoring to track the actual experience of visitors to...
Super easy website performance monitoring for teams that want to have a faster, better ranking website. Get notified if your website gets slow. Most affordable Lighthouse, CrUX and RUM tool.
Monitor your website, server, API, application, service and get notified if your resources have some problems with availability. Upzilla notifies you in Slack, Telegram, Messenger, or by email. Works also as a public status page with subscriptions.
Pinpoint and solve performance issues in your Ruby, Java, .NET, PHP and Python apps with real user, application and server monitoring.
Use this free Website Speed Test to analyze the load speed of your websites, and learn how to make them faster.
We alert you, before your customers do.
OnlineOrNot monitors your websites, web apps, and APIs, letting you know instantly if anything goes wrong.
Falco helps you monitor, analyze, and optimize your websites. Falco runs performance audits several times a day, and offers a historical overview to monitor its evolution and enables you to access the full WebPageTest results of each audit, allowing you to analyze the...
Silent Down is a website uptime and performance monitoring platform, to keep an eye on your application and instantly alert you if any issues arrive.
Monitor the front-end performance and build of your website. Compare yourself to others and beat the competition.
A free page speed test and load behavior analyzer, that also allows you to perform optimization experiments without making changes to your code.
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Request Metrics captures more data for less cost and the data is actionable to fix performance problems.