Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Crypho - End-to-end-encrypted messaging and file sharing
Facebook Messenger - Facebook Messenger is a faster way to message.
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
Amity - Amity's Customer Relationship Hub simplifies customer success management.
Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.