All testing tools

Behavioural product analytics with strong cohort and retention analysis.

The cross-platform standard for native, hybrid and mobile-web automation.

The open-source accessibility rules engine almost every other tool is built on.

The largest browser and real-device cloud, with 3,500+ device/browser combinations.

The professional web security tester's tool of choice, plus an enterprise scanner.

Free dependency updates and vulnerability alerts, built into GitHub.

Generate realistic names, addresses, dates and text for fixtures, in any language.

The enterprise feature-flag platform, with experimentation layered on top.

A local AWS cloud emulator so you can test infrastructure without an AWS bill.

Event analytics with fast, self-serve reporting non-analysts can actually use.

The free, open-source DAST scanner that attacks your running application.

Microsoft's cross-browser automation library with tracing and auto-waiting built in.

The de facto Python testing framework: fixtures, parametrisation, plugins.

Highly configurable automated dependency updates, free and self-hostable.

Extremely fast Python linter and formatter that replaces most of the toolchain.

The W3C standard for browser automation. Every language, every browser, twenty years of it.

Error tracking with stack traces, release attribution and now session replay.

Developer-first security across dependencies, code, containers and infrastructure.

The static-analysis standard: 30+ languages, quality gates, clean-as-you-code.

Real databases and services in throwaway Docker containers, per test run.

The standard HTTP mock server for JVM and beyond: record, replay, stub, simulate faults.

Visual AI that compares screenshots the way a person would, not pixel by pixel.

Deque's commercial layer over axe-core: guided manual testing and enterprise reporting.

Managed cloud execution for JMeter, Gatling, k6 and Selenium scripts.

Enterprise application security platform: SAST, SCA, DAST, IaC and API security.

Query your codebase like a database to find vulnerability patterns across the whole repo.

Behaviour-driven development with Gherkin scenarios shared by business and engineering.

Full-stack observability with automatic dependency mapping and AI root-cause analysis.

Secrets detection across your repositories, history and developer machines.

Open-source feature flags and experimentation that runs on your data warehouse.

Cost-competitive device cloud with an AI-assisted test-orchestration layer.

Write load tests as plain Python. Scale by adding workers.

Software composition analysis with automated remediation and licence compliance.

The original web experimentation platform, now a full digital experience suite.

Consumer-driven contract testing so services can deploy independently.

Visual review as a pull-request check, integrated with your existing E2E suite.

Open-source product analytics, replay, flags and experiments in one self-hostable platform.

Keyword-driven acceptance testing that reads like structured English.

Enterprise-grade device cloud with deep analytics and strong security posture.

Run your own browser grid on your own infrastructure, for free.

Pattern-based static analysis where rules look like the code they match.

Feature flags, experimentation and product analytics in one warehouse-friendly platform.

Python's standard-library xUnit framework. Always there, never exciting.

Open-source feature management with a privacy-first, self-hosted architecture.

Application security as a service, with policy enforcement and compliance attestation.

Experimentation plus heatmaps, replay and surveys in one conversion-optimisation suite.

European experimentation and personalisation platform with strong GDPR positioning.

Automation-first test management built around the Allure reporting format.

Automated code review with security scanning and coverage in the pull request.

Maintainability and technical-debt tracking with a ten-point rating.

Simple, cheap feature flags with unlimited team members on every plan.

Static analysis with autofix, tuned hard for low false-positive rates.

Warehouse-native experimentation with a serious statistics engine.

Open-source feature flags and remote config with straightforward self-hosting.

Experimentation and personalisation with a strong hybrid client/server model.

Design a realistic dataset in the browser and export it as CSV, JSON or SQL.

Enterprise mobile and web testing cloud with carrier-network and biometric coverage.

JetBrains' IDE inspections, running as a CI quality gate.

Property-based fuzzing that generates API tests straight from your OpenAPI schema.

Feature delivery with automatic impact measurement on every flag.

De-identify production data into safe, realistic, referentially intact test databases.

Generative synthetic data with differential-privacy guarantees.

Global device infrastructure focused on performance and real network conditions.

Lightweight service virtualisation: capture real traffic, then simulate it.

Real-device cloud with the option to connect your own devices to the same platform.

Straightforward, keenly priced Selenium and Appium grid from a small European vendor.