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.

AliPrice - AliExpress Price Tracker app lets you track the price history of any item from many online retailers like AliExpress, Daraz, and Amazon, etc.

Persado - Persado is a SaaS-based marketing automation platform prowered by NLP.

idealo - Idealo is a free to use mobile application that helps you to find products, compare price and make an informed decision.

NotificationX - Best social proof and FOMO marketing solution for WordPress to increase conversion rates.

Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.