Cline

Cline is a lightweight A/B and split testing software built to maximize conversions by making it easy to test content and design variations without slowing your site down. Its core script is just 8KB — significantly smaller than the industry average — so your pages stay fast even while tests are running. Optional AI features let you generate and test content variations automatically. Positioned as a modern Google Optimize alternative, Cline has since been acquired by Strictly AI, continuing its mission of accessible, high-performance experimentation.