kaidan is a free and open source XMPP (Jabber) based chat application for Linux and Android. Using kaidan you can send and receive audio messages and short video messages. You can also use this app to share files with your chat contacts. It is a simple and easy to use XMPP client. It is released under open source GPL-3.0+ license. It is a kde project. It is written in C++ using qxmpp XMPP and Qt. In Kaidan you can use all other service provider and not dependent on one.