The best Software Testing tools and resources on the internet.

Over 500+ awesome tools and resources on the internet to supercharge your testing.

No vendor lock-in: Build tests visually. Own them as YAML.

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As a QA professional, you shouldn’t have to choose between fast test creation and control over your test assets. With BugBug, you can now record tests visually and export them as human-readable YAML. Keep them in Git, review changes, create backups, edit them outside the platform, and import them back anytime. Your tests stay portable, reviewable, and under your team’s control. With no vendor lock-in.

See how BugBug's test import & export works →

Docker

use OS-level virtualization to deliver software in packages called containers

Net-Tools.io

free web app to perform functions like DNS lookups, port checks port scans, IP Information gathering, hash generation, blacklist checks, subnet calculation and more..

Traffic Listener

AgentProbe

Playwright for AI Agents. Test what your agent DOES, not what it SAYS. YAML-first behavioral testing. Catch PII leaks, tool abuse, step explosions. 3200+ tests.

Josn

A command-line JSON viewer.

Git History Diff

VS Code extension to view Git history, diff of committed files, git blame info, stash details, and more.

Gmail Tester

A simple Node.js Gmail client which checks the inbox for message existence

Advanced REST Client

A better API testing tool

Ad Speedup

Skip YouTube Video Ads Faster

Fiddler

By Telerik

Traffic Listener

Testcontainers

An open source framework for providing throwaway, lightweight instances of databases, message brokers, web browsers, or just about anything that can run in a Docker container.

Automated Checking

ezy

GUI client for gRPC/gRPC-Web

Jest Image Snapshot

Jest matcher for image comparisons. Most commonly used for visual regression testing.

Automated Checking

Automock

A tool to optimize the unit testing process.

Automated Checking

Agentic QA

An agentic QA tool for use in end to end QA processes, built as a multi-agent AI system that autonomously plans, writes, executes, and reports tests for REST APIs, web UIs, and Python codebases.

TestCafe

No WebDriver required. No manual timeouts needed. Cross-browser testing out-of-the-box.

Automated Checking

mitmproxy

It’s a free and open source interactive HTTPS proxy

borp

node:test runner wrapper with TypeScript support

Automated Checking

Mocks Server

Node.js mock server running live, interactive mocks in place of real APIs

PageSpy

Debug remotely and easily with a range of features like chrome devtool.

Toxiproxy

⏰ 🔥 A TCP proxy to simulate network and system conditions for chaos and resiliency testing

Performance Testing

Katalon

An all-in-one test automation solution

Automated Checking

REST Assured NET

Brings the power of REST Assured to the C# / .NET ecosystem by Simplifying HTTP Testing

Nexial

Test automation for everyone - test automation platform with support for web (selenium), desktop, database, api and much more. Coding not required ;-)

Desktop Automation

PerfAI

AI-powered JMeter script generator and performance analyzer from Swagger/OpenAPI or plain English, with automated bottleneck insights and PDF reporting.

Performance Testing

GQL

SQL like language to perform queries on .git files.

Automated Checking

Password Tech

Password generator and password manager for Windows with full Unicode support.

Page Ruler Redux

chrome plug in

Exploratory Testing

CSV SQL Tool

Run SQL queries on CSV files directly in your browser. No data leaves your browser. Fast, private, and easy to use.

dev-browser

A Claude Skill to give your agent the ability to use a web browser

Automated Checking

Canary

A QA harness built for Claude Code providing end-to-end testing with screen recordings, console logs, network HARs, Playwright traces, and auto-generated replay scripts.