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

Evercontact - Your contacts always up to date and automatically with Evercontact.

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.

CONTACTBOX - CONTACTBOX combines the simplicity of an address book with effective functions of a CRM system.

Fomo - Fomo turns your site into the online equivalent of a busy store

Bigin by Zoho CRM - Pipeline-centric CRM built and priced for small businesses