Kestrel vs NServiceBus: What are the differences?
Kestrel: 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; NServiceBus: *Enterprise-grade scalability and reliability for your workflows and integrations *. Performance, scalability, pub/sub, reliable integration, workflow orchestration, and everything else you could possibly want in a service bus.
Kestrel and NServiceBus can be categorized as "Message Queue" 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.
Property Compass, TTC Technology, and Credit Clear are some of the popular companies that use NServiceBus, whereas Kestrel is used by Judopay, Hootsuite, and TaxCloud. NServiceBus has a broader approval, being mentioned in 9 company stacks & 6 developers stacks; compared to Kestrel, which is listed in 5 company stacks and 6 developer stacks.