119 + Web tools and resources

JSON Hero logo

JSON Hero

DevTools

A beautiful JSON explorer packed with features

Free
Allinone Tools logo

Allinone Tools

DevTools

one-stop resource with tons of little utilities for formatting, editing, generating, minifying, and so on.

Free
WebPageTest logo

WebPageTest

Performance Testing

A web performance tool providing deep diagnostic information about how a page performs under a variety of conditions.

Free with Paid Tire
Contrast Grid logo

Contrast Grid

Accessibility Testing

Check compliance with WCAG 2.0 minimum contrast

Free
TestCaseHub logo

TestCaseHub

Test Case Management

A repository of Test Cases and Scenarios

Free
AChecker logo

AChecker

Accessibility Testing

An open source web accessibility checker

Free
JsonT.run logo

JsonT.run

DevTools

online JSON formatting and processing tool with powerful functions

Free
It Tools logo

It Tools

DevTools

Aggregated set of useful tools that every developer and tester may need once in a while.

Free
JS & CSS Minifier logo

JS & CSS Minifier

DevTools

Make your website smaller and faster by minifying the JS & CSS code!

Free
Google Jamboard logo

Google Jamboard

DevTools

A free online collaborative whiteboard app

Free
Text comparator logo

Text comparator

Other

This simple yet effective tool helps you compare two texts, and reveals the similarities and differences.

Free
Security List logo

Security List

Security Testing

Curated lists of tools, tips and resources for protecting digital security and privacy

Free
Regex Vis logo

Regex Vis

Data

🎨 Regex visualizer & editor

Free
JSON Visio logo

JSON Visio

Data

Visualize your JSON into interactive graphs.

Free
UI Bakery RegEx Library logo

UI Bakery RegEx Library

Data

A curated list of useful regular expressions for different programming languages.

Free
Violating GDPR? logo

Violating GDPR?

Security Testing

Enter a URL and this tool will tell you if the website is violating GDPR laws.

Free
r

regex:help!

Data

An online tool to help you easily generate, test, and refine your regular expressions.

Free
Automated Software Testing... logo

Automated Software Testing...

Learn Software Testing

Unit Testing, Coverage Criteria and Design for Testability.

Free
How to Make Software Fail logo

How to Make Software Fail

Learn Software Testing

Learn how to catch bugs and break software as you discover different testing methods that will help you build better software.

Free
DenyHosts logo

DenyHosts

Security Testing

DenyHosts is a script intended to be run by Linux system administrators to help thwart SSH server attacks (also known as dictionary based attacks and brute force attacks).

Free
Fail2ban logo

Fail2ban

Security Testing

It scans log files (e.g. /var/log/apache/error_log) and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc

Free
Mozilla Observatory logo

Mozilla Observatory

Security Testing

online tool that you can use to check any website’s header status.

Free
regular expressions 101 logo

regular expressions 101

Data

Regex101.com is an interactive regular expression console that lets you debug your expressions in real-time.

Free
PasteSafely logo

PasteSafely

DevTools

A Pastebin alternative

Free
Lighthouse Simulator logo

Lighthouse Simulator

Performance Testing

This tool runs a Lighthouse performance test at a range of different network speeds.

Free
Responsive Viewer logo

Responsive Viewer

Show multiple screens once, Responsive design tester.

Free
Web Developer Checklist logo

Web Developer Checklist

Exploratory Testing

Chrome and Firefox extension to discover problem areas in websites.

Free
Testsigma logo

Testsigma

Automated Checking

Unified, cloud-based test automation platform, powered by AI

Paid
TestProject logo

TestProject

Automated Checking

TestProject is the world's first 100% free test automation platform for Web, Android, iOS and API testing, trusted by over 150,000 users in the testing community.

Free
The Four Hour Tester logo

The Four Hour Tester

Learn Software Testing

Learn software testing by focusing on simple exercises that take at most one hour to complete.

Free
Image Optimization Test logo

Image Optimization Test

Performance Testing

An online tool to enter a URL to see how well the images are optimized and what you can do to improve them.

Free
Hasty logo

Hasty

Performance Testing

JS performance

Free
Bundle Scanner logo

Bundle Scanner

Performance Testing

Identify NPM libraries included in Javascript files

Free
ct.css logo

ct.css

Performance Testing

A diagnostic CSS snippet that exposes potential performance issues in your page’s `head` element.

Free