All testing tools
193 tools across 17 categories. Filter by what you actually need — your language, your budget shape, whether it has to run on your own infrastructure.
40 tools
Appium
Mobile Testing
The cross-platform standard for native, hybrid and mobile-web automation.
axe-core
Accessibility
The open-source accessibility rules engine almost every other tool is built on.
BrowserStack
Device Cloud
The largest browser and real-device cloud, with 3,500+ device/browser combinations.
Dependabot
Security Testing
Free dependency updates and vulnerability alerts, built into GitHub.
Faker
Test Data & Mocks
Generate realistic names, addresses, dates and text for fixtures, in any language.
LaunchDarkly
A/B & Flags
The enterprise feature-flag platform, with experimentation layered on top.
Renovate
Security Testing
Highly configurable automated dependency updates, free and self-hostable.
Selenium WebDriver
E2E & UI Testing
The W3C standard for browser automation. Every language, every browser, twenty years of it.
Sentry
Monitoring
Error tracking with stack traces, release attribution and now session replay.
Snyk
Security Testing
Developer-first security across dependencies, code, containers and infrastructure.
SonarQube
Code Quality
The static-analysis standard: 30+ languages, quality gates, clean-as-you-code.
Testcontainers
Test Data & Mocks
Real databases and services in throwaway Docker containers, per test run.
Applitools Eyes
Visual Testing
Visual AI that compares screenshots the way a person would, not pixel by pixel.
Checkmarx One
Security Testing
Enterprise application security platform: SAST, SCA, DAST, IaC and API security.
CodeQL
Security Testing
Query your codebase like a database to find vulnerability patterns across the whole repo.
Cucumber
E2E & UI Testing
Behaviour-driven development with Gherkin scenarios shared by business and engineering.
GitGuardian
Security Testing
Secrets detection across your repositories, history and developer machines.
GrowthBook
A/B & Flags
Open-source feature flags and experimentation that runs on your data warehouse.
Mend.io
Security Testing
Software composition analysis with automated remediation and licence compliance.
Optimizely
A/B & Flags
The original web experimentation platform, now a full digital experience suite.
Pact
API Testing
Consumer-driven contract testing so services can deploy independently.
Percy
Visual Testing
Visual review as a pull-request check, integrated with your existing E2E suite.
PostHog
Session Replay
Open-source product analytics, replay, flags and experiments in one self-hostable platform.
RSpec
Unit & Component
Ruby's behaviour-driven testing framework with an exceptionally readable DSL.
Sauce Labs
Device Cloud
Enterprise-grade device cloud with deep analytics and strong security posture.
Selenium Grid
Device Cloud
Run your own browser grid on your own infrastructure, for free.
Semgrep
Security Testing
Pattern-based static analysis where rules look like the code they match.
Statsig
A/B & Flags
Feature flags, experimentation and product analytics in one warehouse-friendly platform.
TestMu AI
Device Cloud
Cost-competitive device cloud with an AI-assisted test-orchestration layer.
Unleash
A/B & Flags
Open-source feature management with a privacy-first, self-hosted architecture.
Veracode
Security Testing
Application security as a service, with policy enforcement and compliance attestation.
Codacy
Code Quality
Automated code review with security scanning and coverage in the pull request.
ConfigCat
A/B & Flags
Simple, cheap feature flags with unlimited team members on every plan.
DeepSource
Code Quality
Static analysis with autofix, tuned hard for low false-positive rates.
Eppo
A/B & Flags
Warehouse-native experimentation with a serious statistics engine.
Flagsmith
A/B & Flags
Open-source feature flags and remote config with straightforward self-hosting.
Qlty (formerly Code Climate Quality)
Code Quality
Maintainability and technical-debt tracking, spun out of Code Climate as Qlty.
Redmine
Bug Tracking
Free, self-hosted project and issue tracking that has outlived most competitors.
Split
A/B & Flags
Feature delivery with automatic impact measurement on every flag.
TestingBot
Device Cloud
Straightforward, keenly priced Selenium and Appium grid from a small European vendor.