Kestrel vs XMPP: What are the differences?
Developers describe Kestrel as "Simple, distributed message queue system". Kestrel is based on Blaine Cook's "starling" simple, distributed message queue, with added features and bulletproofing, as well as the scalability offered by actors and the JVM. On the other hand, XMPP is detailed as "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.
Kestrel can be classified as a tool in the "Message Queue" category, while XMPP is grouped under "Container Tools".
Kestrel is an open source tool with 2.8K GitHub stars and 326 GitHub forks. Here's a link to Kestrel's open source repository on GitHub.
Mendix, Vidyo.io, and Relayo are some of the popular companies that use XMPP, whereas Kestrel is used by Judopay, Hootsuite, and TaxCloud. XMPP has a broader approval, being mentioned in 7 company stacks & 5 developers stacks; compared to Kestrel, which is listed in 5 company stacks and 6 developer stacks.