Nudgify - Nudgify is a Social Proof App that includes FOMO, Urgency and Review Nudges. Adding Social Proof notifications to your site helps you build trust and increase conversions on Shopify, Wordpress or any other platform.
Inbound Rocket - Converts visitors into leads, subscribers & customers
NotificationX - Best social proof and FOMO marketing solution for WordPress to increase conversion rates.
ConversionChecklist.org - A 41 point checklist to make your website convert better
Proof - Website conversion rate optimization and visitor monitoring
Conversion Lab - Get high conversion rates on landing pages