XMPP vs ZeroMQ: What are the differences?
What is XMPP? An open XML technology for real-time communication. It is a set of open technologies for instant messaging, presence, multi-party chat, voice and video calls, collaboration, lightweight middleware, content syndication, and generalized routing of XML data.
What is ZeroMQ? Fast, lightweight messaging library that allows you to design complex communication system without much effort. The 0MQ lightweight messaging kernel is a library which extends the standard socket interfaces with features traditionally provided by specialised messaging middleware products. 0MQ sockets provide an abstraction of asynchronous message queues, multiple messaging patterns, message filtering (subscriptions), seamless access to multiple transport protocols and more.
XMPP can be classified as a tool in the "Container Tools" category, while ZeroMQ is grouped under "Message Queue".
ZeroMQ is an open source tool with 5.43K GitHub stars and 1.59K GitHub forks. Here's a link to ZeroMQ's open source repository on GitHub.
Binary.com, GrowSumo, and Runbook are some of the popular companies that use ZeroMQ, whereas XMPP is used by Mendix, Vidyo.io, and Relayo. ZeroMQ has a broader approval, being mentioned in 45 company stacks & 88 developers stacks; compared to XMPP, which is listed in 7 company stacks and 5 developer stacks.