Azure Service Bus vs RSMQ: What are the differences?
Azure Service Bus: Reliable cloud messaging as a service (MaaS) *. It is a cloud messaging system for connecting apps and devices across public and private clouds. You can depend on it when you need highly-reliable cloud messaging service between applications and services, even when one or more is offline; *RSMQ:** A lightweight message queue for Node.js that requires no dedicated queue server. Just a Redis server. tl;dr: If you run a Redis server and currently use Amazon SQS or a similar message queue you might as well use this fast little replacement. Using a shared Redis server multiple Node.js processes can send / receive messages.
Azure Service Bus and RSMQ belong to "Message Queue" category of the tech stack.
RSMQ is an open source tool with 1.1K GitHub stars and 83 GitHub forks. Here's a link to RSMQ's open source repository on GitHub.