swap_horiz Glowroot Alternatives

1

PageSpeed Insights

PageSpeed Insights is a free web analysis tool from Google that assesses a website’s loading speed across various device...

Free Google WebPageTest Speed Test

9.1 Excellent

2

Sitespeed.io

Sitespeed.io is an open-source tool designed for analyzing website performance. It provides data on key metrics such as...

Performance Monitoring Open Source Self Hosted

8.7 Great

3

Bundlephobia

Bundlephobia is a web performance tool designed to analyze website asset sizes. It identifies large JavaScript bundles a...

Developer Javascript Web Front End

8.5 Great

4

Blackfire.io

Blackfire.io is an online web performance analysis tool designed for developers and site owners. It uses real browser si...

Performance PHP Apm Profiling

8.4 Great

5

OctoPerf

OctoPerf is an automated testing tool that measures the performance of websites and web applications by simulating real...

Performance SAAS Load Testing Jmeter Cloud

8.1 Great

6

StormForge

StormForge is an open-source tool that analyzes website performance by simulating real browser connections to identify a...

Performance Optimization SAAS Load Testing

8.0 Great

7

Speedscale

Speedscale is an open-source tool that analyzes website performance by measuring key metrics like First Contentful Paint...

Performance API Load Testing Kubernetes

7.9 Good

8

Lumar

Lumar is a comprehensive web performance analysis tool designed for enterprise SEO professionals and technical teams. It...

Technical SEO Enterprise SEO Audit Crawler

7.9 Good

9

StatusGator

StatusGator is a free online tool that analyzes website loading speed across multiple global servers and reports the ave...

Monitoring SAAS Aggregator Status Page

7.7 Good

10

Hyperping

Hyperping is an open-source tool that analyzes website performance by simulating multiple HTTP requests to measure serve...

Modern Monitoring Uptime Status Page

7.6 Good

11

Uptrends Website Speed Test

Uptrends Website Speed Test is an online tool that measures the loading time and performance of websites by analyzing va...

Performance Monitoring Web WebPageTest

7.5 Good

12

Sensu

Sensu is an open-source tool that analyzes website performance by measuring key metrics like First Contentful Paint, Lar...

Monitoring Open Source Developer Observability

7.5 Good

13

Seobility

Seobility is a website speed testing tool that analyzes a webpage’s performance across multiple metrics like Core Web Vi...

Performance Monitoring SEO Audit Freemium

7.3 Good

14

Sitechecker

Sitechecker analyzes website loading speed across multiple global locations and browsers, providing detailed reports on...

Monitoring SEO SAAS Audit

7.1 Good

15

Ghost Inspector

Ghost Inspector is a free, open-source browser extension that analyzes website performance by simulating a real mobile d...

Monitoring SAAS Browser Synthetic

7.0 Good

16

Cachet

Cachet is an open-source tool that analyzes website performance by measuring key metrics like First Contentful Paint, La...

Communication Open Source Self Hosted Incident

6.9 Fair

17

Highlight.io

Highlight.io is a website speed testing tool that analyzes webpages using Lighthouse and PageSpeed Insights to provide d...

Monitoring Open Source Observability Rum

6.9 Fair

18

FusionReactor

FusionReactor is an open-source tool that analyzes website performance by simulating real browser behavior and measuring...

Monitoring SAAS Java Apm

6.9 Fair

19

HetrixTools

HetrixTools is a free online website speed testing tool that measures website loading times and performance metrics like...

Monitoring SAAS Uptime Alerts

6.8 Fair

20

Hardenize

Hardenize is a tool that analyzes websites to identify and prioritize performance bottlenecks stemming from server-side...

Monitoring SSL DNS WebPageTest

6.3 Fair