swap_horiz Sa11y Alternatives

1

Google PageSpeed Insights

Google PageSpeed Insights is the go-to tool for understanding how your website performs in Google's eyes. It provides sc...

Free Accessibility Google Performance

9.1 Excellent

2

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

3

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

4

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

5

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

6

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

7

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

8

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

9

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

10

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

11

Percy

Percy is a web performance monitoring tool designed to identify issues impacting website speed and user experience. It s...

SAAS Visual Testing Regression WebPageTest

7.7 Good

12

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

13

Test My Site (Think with Google)

Google's Test My Site tool assesses a website's loading speed across mobile devices. It provides detailed reports pinpoi...

Google Performance Mobile Legacy

7.6 Good

14

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

15

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

16

Polypane

Polypane is a web performance analysis tool designed for developers. It simulates browsing environments on desktop and t...

Accessibility Responsive Developer Browser

7.5 Good

17

SpeedVitals

SpeedVitals is a website tool that analyzes webpage loading speed by measuring various metrics like First Contentful Pai...

Performance Web WebPageTest Speed Test

7.4 Good

18

Loadster

Loadster is a free online tool that analyzes website loading speed by simulating various network conditions and measurin...

Cloud Performance SAAS Load Testing

7.4 Good

19

Loadmill

Loadmill is an open-source website speed testing tool that analyzes a webpage’s performance by measuring various metrics...

Cloud Automation No Code API

7.4 Good

20

WhoCanUse

WhoCanUse is a website analysis tool that identifies the specific resources and elements contributing to a webpage’s loa...

Accessibility Free Tool Color Vision

6.8 Fair