swap_horiz PageSpeed Ninja Alternatives

1

Astro

Astro is a rapidly evolving SSG focused on performance and developer experience. Its 'islands architecture' allows for p...

Modern Performance Developer Friendly Javascript

9.5 Brilliant

2

GatsbyJS with Shopify Storefront API

Gatsby excels at generating blazing-fast, static sites using GraphQL. When paired with the Shopify Storefront API, it cr...

Performance SEO E Commerce React

9.3 Excellent

3

FastAPI

FastAPI has rapidly gained prominence as a high-performance Python web framework for building APIs. Built on modern Pyth...

Modern Performance API Python

9.2 Excellent

4

BuiltWith

BuiltWith analyzes websites to reveal the technology stack behind them. It identifies software like content management s...

SAAS Competitive WebPageTest Tech Profiler

8.9 Great

5

SpeedCurve

SpeedCurve is a web performance monitoring tool designed to analyze website speed and identify areas for improvement. It...

Performance Monitoring Web Synthetic

8.8 Great

6

Prometheus Blackbox Exporter

The Prometheus Blackbox Exporter is an open source HTTP service designed to gather deep performance data from web applic...

Monitoring Open Source Uptime Prometheus

8.7 Great

7

Gin

Gin is a lightweight web framework for building Go-based backend applications. It’s notable for its high performance ach...

Performance API Go Backend

8.6 Great

8

Preact

Preact is a fast, 3kB alternative to React with the same modern API. It is designed for developers who want the React de...

Lightweight Software Modern Performance

8.5 Great

9

Fastify

Fastify is a high-performance Node.js framework designed for building efficient APIs. It achieves this by minimizing res...

Performance API Javascript Backend

8.5 Great

10

Downdetector

Downdetector is a public platform utilizing crowdsourced data to track online service disruptions. Users report experien...

Public Outage Crowdsourced Uptime

8.4 Great

11

Robot Framework

Robot Framework is an open source automation tool designed for creating robust tests. It utilizes a keyword-driven metho...

Open Source Python Keyword Driven Test Automation

8.4 Great

12

Grafana Pyroscope

Pyroscope is an open source profiling tool built for Grafana. It uses continuous profiling based on web performance data...

Performance Open Source Observability WebPageTest

8.4 Great

13

Treo Site Speed

Treo Site Speed is a tool that analyzes website loading times by measuring various factors like First Contentful Paint,...

Performance Monitoring Web WebPageTest

7.4 Good

14

webhint

WebHint is a free online tool that analyzes website code to identify potential performance issues related to JavaScript,...

Accessibility Performance Open Source Microsoft

6.9 Fair

15

nGrinder

nGrinder is an open-source, cross-platform tool used to measure and diagnose website performance by simulating multiple...

Performance Open Source Load Testing Groovy

6.9 Fair

16

Request Map Generator

Request Map Generator is a web tool that analyzes website loading times by visualizing the waterfall chart of HTTP reque...

Performance Visualization Web Third Party

6.5 Fair

17

PageSpeed Compare

PageSpeed Insights analyzes a website’s loading time and provides specific recommendations for optimization based on Goo...

Free Performance Comparison Web

6.4 Fair

18

Geekflare Website Audit

Geekflare’s Website Audit utilizes automated tools and human analysis to assess a website's performance based on metrics...

Performance Audit Web WebPageTest

6.4 Fair

19

RUMvision

RUMvision is a tool that analyzes website performance data from real users, providing insights into metrics like First C...

Performance Monitoring SAAS Rum

6.4 Fair

20

WAPT

WAPT (WebPageTest) is an open-source tool that analyzes website loading speed by simulating various network conditions a...

Performance Commercial Load Testing Windows

5.7 Mediocre