Landing Pages in MailChimp - Easy to build, custom landing pages for free
OptiMonk - OptiMonk is the most powerful Onsite Retargeting platform, that helps you increase the conversion rate of your site, and get more leads by recovering lost visitors.
SaaS Pages - 900+ Screenshots of the best SaaS landing pages
Elementor Popup Builder - Design-oriented popup builder, built into Elementor
Ship - Fast, native issue tracking for software projects
13Chats - Pop-ups and widgets based on client actions on your website