swap_horiz Polypane Alternatives

1

Accessibility Insights

Accessibility Insights is a browser extension and command-line tool that analyzes web pages for accessibility issues bas...

Free Accessibility Microsoft A11y

8.5 Great

2

Cloudflare Speed Test

Cloudflare Speed Test measures website loading times from multiple global locations, providing data on First Byte Time,...

Free Browser Diagnostic Network Speed

8.2 Great

3

Artillery

Artillery is a Google PageSpeed Insights tool that analyzes a website’s performance by simulating how it would load on v...

Performance Open Source Developer Load Testing

8.1 Great

4

Color Contrast Analyser (TPGi)

The TPGi tool, part of WebPageTest, analyzes webpage color combinations to determine their contrast ratio against WCAG a...

Accessibility Desktop Contrast Wcag

8.1 Great

5

Responsively App

Responsively App is a Chrome extension that analyzes website loading speed across various devices and connection types,...

Open Source Responsive Developer Browser

8.0 Great

6

Raygun Real User Monitoring

Raygun Real User Monitoring provides detailed performance data for websites and web applications by capturing actual use...

Performance Monitoring Developer Rum

7.8 Good

7

Pa11y

Pa11y is an open-source command-line tool and browser extension that automatically audits websites for accessibility iss...

Accessibility Open Source Command Line CI

7.8 Good

8

TestCafe

TestCafe is an open-source Node.js automation tool designed for end-to-end testing of modern web applications, offering...

Automation Open Source Browser Node

7.8 Good

9

Stark

Stark is a JavaScript-based page optimization tool that analyzes and improves website loading speed by reducing file siz...

Accessibility Design Plugin Contrast

7.6 Good

10

Goose

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

Open Source Rust Developer Stress Test

7.4 Good

11

Siteimprove

Siteimprove is an enterprise-level SEO platform that analyzes websites for technical issues impacting search engine rank...

Accessibility Monitoring Enterprise SEO

7.4 Good

12

WebSite Auditor (SEO PowerSuite)

Website Auditor, part of the SEO PowerSuite, analyzes websites for on-page SEO elements like title tags, meta descriptio...

SEO Desktop Audit On Page

7.4 Good

13

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

7.3 Good

14

ARC Toolkit

ARC Toolkit is a free, open-source web performance testing tool that analyzes website speed and identifies specific bott...

Accessibility Browser Extension Wcag A11y

7.2 Good

15

Sa11y

Sa11y is an open-source, command-line tool that analyzes website performance by measuring various metrics like First Con...

Accessibility Open Source CMS Checker

7.2 Good

16

Xenu's Link Sleuth

Xenu’s Link Sleuth is a website tool that analyzes a given webpage to identify and display all of its outbound links, pr...

Classic Desktop Crawler Broken Links

7.1 Good

17

Level Access

Level Access is a website auditing tool that analyzes webpages to identify accessibility issues based on WCAG guidelines...

Accessibility Enterprise SAAS Audit

7.0 Good

18

Monsido

Monsido is a website performance monitoring tool that analyzes webpage speed and identifies technical issues impacting u...

Accessibility SAAS Audit Quality

7.0 Good

19

SpeedOf.Me

SpeedOf.Me is a free online tool that analyzes website loading speed by measuring key metrics like First Contentful Pain...

Browser Html5 Web Bandwidth

6.8 Fair

20

Request Metrics

Request Metrics is a free online tool that analyzes website performance by collecting and reporting data on HTTP request...

Monitoring SAAS Developer Rum

6.3 Fair