Optimizely - A/B testing you'll actually use.
Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.
VWO - Use VWO to tweak, optimize & personalize your website with minimal IT help.
Criteo - Build, scale, and activate first-party audiences with The Commerce Media Platform.
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
Campaign Monitor - Email marketing software built for designers and their clients to run successful email campaigns.