Jetty vs Pow: What are the differences?
Developers describe Jetty as "An open-source project providing an HTTP server, HTTP client, and javax.servlet container". Jetty is used in a wide variety of projects and products, both in development and production. Jetty can be easily embedded in devices, tools, frameworks, application servers, and clusters. See the Jetty Powered page for more uses of Jetty. On the other hand, Pow is detailed as "Zero-configuration Rack server for Mac OS X". Pow is a zero-configuration Rack server for Mac OS X. It makes developing Rails and Rack applications as frictionless as possible. You can install it in ten seconds and have your first app up and running in under a minute. No mucking around with /etc/hosts, no compiling Apache modules, no editing configuration files or installing preference panes. And running multiple apps with multiple versions of Ruby is trivial.
Jetty and Pow belong to "Web Servers" category of the tech stack.
Jetty and Pow are both open source tools. Pow with 3.47K GitHub stars and 259 forks on GitHub appears to be more popular than Jetty with 2.55K GitHub stars and 1.4K GitHub forks.