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.

Friend Hunt - Get desktop notifications when your friends comment on PH

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

#MakerGoals - Live Twitter embeddable GIFs of your Product Hunt stats

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

History of Product Hunt - Learn community building from Product Hunt's example