Rename Email - Easily change the subject of any email, by cloudHQ
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
WhoApp - Know who's calling before you answer
Kyte - India's first AI powered SMS inbox
Rapid 2FA - A painless way to add two-factor authentication to your site
Hiya - Know who's calling or texting and block spammers on Android