Referrer Spam Remover - Remove spam bots from your Google Analytics data
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Spam Check - A free JSON API to check your email messages' spam scores
Kyte - India's first AI powered SMS inbox
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.
Hiya - Know who's calling or texting and block spammers on Android