RabbitMQ vs rabbitmqhosting.com

RabbitMQ is licensed under the Mozilla Public License. Because it's such a core part of a system, it's better that it's open source to avoid expensive licensing or consulting fees.

Erlang is a fast concurrent language designed for non-stop, real time, message passing applications, which makes it a great language for a message queue.

Although RabbitMQ is open source, it is still backed by Pivotal Software, giving it a stronger financial and developer backing. It also means there's a company to go to if you need help scaling in the future.

Messages in RabbitMQ are sent to a central broker before being passed to clients. This makes RabbitMQ a better choice if you are in need of more complicated methods of message passing such as routing and load balancing.

They say that they setup rabbitMQ on dedicated nodes. Thus their rabbitMQ nodes have unmatched performance as they do not have to contend with server resources with other peoples rabbitMQ applications. They do not setup shared rabbitMQ servers(vhosts).

They do not seem to impose any limitation on either:

• the number of messages you can send.
• the number of queues you can create.
• the number of connections that you can have.
• the number of queued messages.