swap_horiz Lost Pixel Alternatives

1

Lighthouse CI

Lighthouse CI is an open source command-line tool designed to automate website performance testing. It utilizes Google's...

Google Performance Automation Open Source

8.9 Great

2

Chromatic

Chromatic is a web auditing tool designed for developers and designers seeking to improve website performance. It uses v...

SAAS Visual Testing Storybook Regression

8.7 Great

3

kind

Kind is a tool facilitating local container development and testing. It allows developers to run Docker containers local...

Docker Development Testing CI

8.6 Great

4

Sauce Labs

Sauce Labs offers a cloud testing platform designed to evaluate website performance across various browsers and devices....

Cloud Performance Testing Cross Browser

8.4 Great

5

BackstopJS

BackstopJS is an open source Node.js tool designed to automate website testing. It captures screenshots across multiple...

Automation Open Source Screenshot Node

8.4 Great

6

LambdaTest

LambdaTest provides cloud-based cross-browser and responsive web testing. It simulates website behavior on numerous devi...

Cloud SAAS Responsive Testing

8.3 Great

7

Pa11y

Pa11y is an open source command line tool designed to assess web content against Web Content Accessibility Guidelines (W...

Accessibility Open Source Command Line WebPageTest

8.2 Great

8

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

9

StackHawk

StackHawk is an open-source platform that automatically identifies and diagnoses performance bottlenecks and security vu...

Security API Developer WebPageTest

7.2 Good

10

Browserling

Browserling is a cross-browser testing tool that simulates real user environments by offering pre-configured virtual mac...

Cloud Interactive Testing Live

6.8 Fair

11

Middleware.io

Middleware.io is an open-source tool that analyzes website performance by simulating real browser connections to measure...

Cloud Monitoring Observability Apm

6.4 Fair

12

OnlineOrNot

OnlineOrNot is a web service for monitoring websites, APIs, scheduled jobs, and related production endpoints. It can per...

SAAS Synthetic Uptime Status Page

6.4 Fair

13

Total Validator

Total Validator is a free online tool that analyzes website performance by simulating various connection speeds and devi...

Accessibility SEO Desktop Validation

6.4 Fair

14

Yandex Pandora

Yandex Pandora is a tool developed by Yandex that analyzes website loading speed and identifies specific resources – lik...

Performance Open Source Load Testing High Throughput

6.3 Fair

15

WebSitePulse

WebsitePulse is a tool that analyzes website loading speed and performance by simulating real browser connections to ide...

Monitoring SAAS Global Transaction

6.0 Fair

16

17ce.com

17ce.com is a website that analyzes the loading speed and performance of websites across various metrics like First Cont...

Speed Monitoring China CDN

6.0 Fair

17

Alertra

AlertZero’s PageSpeed Insights tool analyzes website performance by simulating real browser behavior and measuring key m...

Monitoring SAAS Web Alerting

5.8 Mediocre

18

Hund

Hund is a JavaScript library designed to analyze and improve website performance by identifying and addressing critical...

Monitoring SAAS Uptime Status Page

5.7 Mediocre

19

Browsershots

Browsershot is a tool that captures screenshots of individual pages rendered by various web browsers simultaneously, pro...

Free Legacy Compatibility Cross Browser

5.2 Mediocre

20

Foo

Foo is an open-source, automated website speed testing tool that analyzes various aspects of webpage performance, includ...

Monitoring Page Speed Lighthouse SAAS

4.4 Poor