List of the Best Pop-Up Builder Software in 2026

Convertful and Justuno both sit at the top of the review count with 168–173 reviews and cover advanced targeting rules — exit intent, scroll depth, and segment-based triggers — that go well beyond the basics of timed overlays. OptinMonster at 4.4/5 from 113 reviews is the long-standing choice for WordPress sites, with a drag-and-drop visual builder and extensive A/B testing that lets marketers optimize opt-in campaigns without developer help. OptiMonk at 4.74/5 from 31 reviews is gaining ground with e-commerce teams because of its product-recommendation popups and smart personalization based on cart contents and browsing behavior.

Pop-up builder software creates timed, exit-intent, scroll-triggered, and targeted overlays that capture email addresses, promote offers, or guide visitors toward specific conversion actions on a site. E-commerce marketers, growth teams, and conversion specialists use it to convert more of the traffic they already have without increasing ad spend.