# A/B Testing Tools ### Industry Recommended Free A/B Test Tools [Google Optimize](https://support.google.com/analytics/answer/12979939?hl=en) was a free A/B testing and personalization tool that many businesses used, but Google officially sunsetted it on **September 30, 2023**. It is no longer available for use. However, below are a few industry recommended A/B Testing tools.

Firebase A/B Testing (By Google) – Ideal for app developers using Firebase.

  • Integrates with Google Analytics.
  • Supports remote feature configuration.

Google Ads Experiments – Optimizes Google Ads campaigns.

  • Tests variations in ad copy, bidding strategies, and targeting.
  • Provides built-in performance tracking.

Google Ad Manager Experiments – Helps publishers optimize ad placements.

  • Tests different ad configurations.
  • Analyzes revenue impact.

GrowthBook – Free and open-source A/B testing tool.

  • Supports client-side and server-side testing.
  • Flexible integration with any tech stack.

PostHog – Self-hosted and great for product experimentation.

  • Includes feature flags for controlled rollouts.
  • Provides user behavior analytics.

Unleash – Open-source feature flagging with experimentation capabilities.

  • Allows gradual rollouts and real-time updates.
  • Enables A/B testing without redeploying code.
### Industry Recommended Paid A/B Test Tools However, if your newsroom has the budget and capability to explore paid options, the below are a few industry recommended paid tools.

AB Tasty – Focuses on user experience and conversion optimization.

  • Offers AI-driven personalization.
  • Provides real-time testing and analytics.

Optimizely – A leading enterprise-level A/B testing platform.

  • Supports full-stack experimentation.
  • Enables advanced audience targeting.

VWO – A cost-effective alternative to Optimizely.

  • Includes a visual editor for setting up tests.
  • Offers built-in heatmaps for user behavior insights.