uTox

uTox is a free and secure encrypted chat available for Linux. uTox is a chat messenger which is an alternative for skype application and supports instant messages, file transfer, voice and video chats etc. It is a light weight application and supports almost all platforms. It supports all the instant messenger feature with the encoded property. It has features such as Text chats, File transfers, Text-only group chats, Add friends using Tox ID.