Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Bumble - Bumble is a social network that allows you to feel empowered while you make those connections, whether you’re dating, looking for friends, or growing your professional network. One first move on Bumble could change your life.
Hiya - Know who's calling or texting and block spammers on Android
Tinder - Tinder is how people meet. It's like real life, but better.
Credo360 - Figure out who to trust by looking at a social credit score
Hinge - Find people you want to date through your friends on Facebook.