Best software for A/B testing

Best A/B Testing Platforms (All-Around)

1. VWO (Visual Website Optimizer)

   • Best for: All-in-one testing + CRO

   • Why: A/B, multivariate, split URL testing + heatmaps, funnels, and personalization

   • Good for: Marketing and product teams of all sizes

2. Optimizely

   • Best for: Enterprise and product teams

   • Why: Powerful experimentation engine with server-side testing and feature flagging

   • Note: Pricey but extremely scalable

3. AB Tasty

   • Best for: Mid-size businesses and eCommerce

   • Why: Visual editor, AI-based targeting, and built-in personalization tools

🛠️ Best for Developers / Product Teams

4. Google Optimize (sunset, so alternatives below)

   • RIP. Use these instead:

5. GrowthBook

   • Best for: Engineering teams who want control

   • Why: Open-source A/B testing framework with feature flagging and solid analytics

6. Split.io

   • Best for: Feature experimentation at scale

   • Why: Focuses on dev workflows, fast performance, and real-time decision-making

7. LaunchDarkly

   • Best for: Feature flagging + testing

   • Why: Lets you test features in production without risky rollouts

⚙️ Easier Tools for Marketers

8. Convert.com

   • Best for: Privacy-focused, marketer-friendly testing

   • Why: Clean UI, GDPR/CCPA-ready, and supports A/B, multivariate, and split URL testing

9. Freshmarketer (by Freshworks)

   • Best for: Quick testing inside marketing campaigns

   • Why: Heatmaps, split testing, and funnel analysis baked in

10. Zoho PageSense

• Best for: Small businesses

• Why: Affordable and includes testing + behavior analytics in one place

🔥 Bonus: Platforms with Built-In A/B Testing

• Unbounce / Instapage – Landing page builders with baked-in A/B testing

• HubSpot – A/B test emails, landing pages, and CTAs inside marketing automation

• Klaviyo / Mailchimp – A/B test subject lines, content, send times in emails

TL;DR

Want me to narrow this down based on your team, tech stack, or budget?