Mosquitto is an open source implementation of a server for version 3.1 of the
MQTT protocol. IBM have released a closed source implementation of such a
server, which is known as Really Small Message Broker (rsmb). Mosquitto is
largely a drop in replacement with more features.

See the following links for more information on MQTT:


Mosquitto project information is available at the following locations:

http://mosquitto.org/ (main homepage)
http://launchpad.net/mosquitto (bug tracking, translations)
http://bitbucket.org/oojah/mosquitto (hg source code repository)

There is also a public test server available at http://test.mosquitto.org/

Mosquitto was written by Roger Light <roger@atchoo.org>

This product includes software developed by the OpenSSL Project for use in the
OpenSSL Toolkit. (http://www.openssl.org/)
This product includes cryptographic software written by Eric Young
This product includes software written by Tim Hudson (tjh@cryptsoft.com)