swap_horiz Percy 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 a free online tool that analyzes website loading speed by simulating real browser performance, providing...

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

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

Test My Site (Think with Google)

TestMySite, part of Google’s Think With Google initiative, analyzes website loading speed and identifies technical issue...

Google Performance Mobile Legacy

7.6 Good

12

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

13

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

14

Polypane

Polypane is an open-source, Node.js-based tool that analyzes website performance by simulating real browser behavior and...

Accessibility Responsive Developer Browser

7.5 Good

15

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

16

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

17

Sitechecker

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

Monitoring SEO SAAS Audit

7.1 Good

18

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

19

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

20

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