Stellar

Stellar is a lightweight A/B testing tool where you can test any site. Many consider it the better alternative to tools like VWO or Optimizely.

It is designed for speed, simplicity, and seamless integration. At just 5.4KB, our script is up to 25x smaller than competitors, ensuring zero impact on site speed and Core Web Vitals.

It has a free-forever tier and pricing that actually makes sense.

🚀 Set up your first test in under 60 seconds
🛠 No-code visual editor for easy variant creation
📊 Real-time analytics & GA4 integration
💰 Free forever for up to 25k monthly tracked users
🔒 GDPR compliant – no cookies, no bloat
💳 No credit card required.

Unlike bloated testing platforms, Stellar keeps things fast, clutter-free, and developer-friendly, making it the perfect tool for CRO marketers, e-commerce brands, and growth teams. Whether you're running split tests, optimizing landing pages, or personalizing content, Stellar lets you experiment without compromise.