Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

FriendLife - FriendLife is a great and interesting way of making new and dashing friends for free.

MushRoom - KnockKnock the person whom you want to message and he/she should accept your knockRoom or Group can be created by providing a nameShare Room link with your friends to join the conversationWatch video or listen music during conversation

Twoo - With the millions of active and interesting people around the world, Twoo is one of the most interesting and practical means for finding the new people across the globe.

Path Talk - Smart, Private Messaging

Qeep - If you are looking for a dedicated application freely allowing you to meet new people and find interesting friends, then Qeep is an application to whom you must give at least one try.