swap_horiz Bundlephobia 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 toolkit for measuring and improving website performance by analyzing various metrics like...

Performance Monitoring Open Source Self Hosted

8.2 Great

3

Blackfire.io

Blackfire.io is a free online tool that analyzes website loading speed by simulating real browser performance, providing...

Performance PHP Apm Profiling

8.2 Great

4

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

5

Bombardier

Bombardier is a website speed testing tool developed by Dareboost that analyzes a webpage’s performance across various m...

Open Source CLI Benchmark Go

7.8 Good

6

Percy

Percy is an open-source tool that analyzes the loading speed and performance of websites by simulating real browser beha...

SAAS Visual Testing Regression WebPageTest

7.7 Good

7

Hey

Hey is a free online tool that analyzes websites to identify performance bottlenecks and provides actionable recommendat...

Open Source CLI Benchmark Go

7.6 Good

8

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

9

SpeedVitals

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

Performance Web WebPageTest Speed Test

7.5 Good

10

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

11

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

12

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

13

KeyCDN Website Speed Test

KeyCDN’s Website Speed Test utilizes the WebPageTest platform to measure website loading times across various locations...

Performance CDN Web WebPageTest

7.2 Good

14

Fortio

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

Grpc Load Testing CLI Benchmark

7.2 Good

15

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

7.2 Good

16

StormForge

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

Performance Optimization SAAS Load Testing

7.2 Good

17

Sa11y

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

Accessibility Open Source CMS WebPageTest

7.2 Good

18

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

7.0 Good

19

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

6.8 Fair

20

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