Introduction
============

.. image:: ../_static/logo-jami.svg
   :alt: Jami logo

Jami is a free/libre, end-to-end encrypted and private communication
platform that requires no central authority.

Jami's features include: text chats, voice and video calls, screen
sharing, file sharing, conference calls, and :doc:`group chats
<../developer/swarm>`.  Jami can also function as a regular SIP
client.

Jami works on GNU/Linux, Windows, macOS, iOS, and Android.  Multiple
devices can be linked to a Jami account, and no personal information
is required to create an account.

How does Jami work?
-------------------

Jami uses a `distributed hash table
<https://en.wikipedia.org/wiki/Distributed_hash_table>`_ (DHT) to
connect peers.  Jami accounts are asymmetric `X.509 certificates
<https://en.wikipedia.org/wiki/X.509>`_ generated by the GnuTLS
library.  Calls are made over the `Session Initiation Protocol
<https://en.wikipedia.org/wiki/Session_Initiation_Protocol>`_ (SIP)
after negotiating a `TLS
<https://en.wikipedia.org/wiki/Transport_Layer_Security>`_-encrypted
secure connection, performing `Secure Real-time Transport Protocol
<https://en.wikipedia.org/wiki/Secure_Real-time_Transport_Protocol>`_
(SRTP) communication which carries the media streams.

For more on how Jami works, see the `Jami and how it empowers users
<https://kelar.org/~bandali/talks/jami-empowers-users.html>`_ talk by
`Amin Bandali <https://kelar.org/~bandali/>`_, as well as the
:doc:`Technical Overview <../developer/technical-overview>` for more
in-depth information.

Who makes Jami?
---------------

The Jami project is led by `Savoir-faire Linux
<https://www.savoirfairelinux.com/en/>`_ -- a Canadian/Québécois
GNU/Linux consulting company -- and is supported by a global community
of free software enthusiasts, users, and contributors.

Jami is `free software <https://www.gnu.org/philosophy/free-sw.html>`_
and an official GNU package, developed and distributed under the
`GNU GPLv3+ <https://www.gnu.org/licenses/gpl-3.0.html>`_ license.