Earlynote

A time-travelling messaging app

Crypho

End-to-end-encrypted messaging and file sharing

Cyph

Cyph is the name of a completely free chatting website that provides its visitors with a secure and safe chatting environment.

Encrypto

Encrypto lets you encrypt files before sending them to friends or coworkers.

Expensive Chat

Chatroom where you pay per letter

Facebook Messenger

Facebook Messenger is a faster way to message.

Hermes

Pandora Client for OS X

Hie Chat

Know what your friends are doing and chat without typing

Intercom

Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers. Intercom helps you build customer relationships through conversational, messenger-based experiences across the customer journey.