Referrer Spam Remover - Remove spam bots from your Google Analytics data
heatmap.js - Dynamic Real-time Heatmaps for the Web
Spam Check - A free JSON API to check your email messages' spam scores
Unspam.email - Email spam checker and newsletter heatmap prediction.
CanIPhish - Blend social engineering with real-world phishing simulations to train your users how to detect the most advanced threats.All in a completely self-service, fast, free and modern SaaS platform.
TheHOTH - The HOTH is a white label SEO service built specifically for agencies, in-house SEOs, and affiliates.