Pow vs Unicorn: What are the differences?
What is Pow? 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.
What is Unicorn? Rack HTTP server for fast clients and Unix. Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/Unix-like kernels. Slow clients should only be served by placing a reverse proxy capable of fully buffering both the the request and response in between Unicorn and slow clients.
Pow and Unicorn can be primarily classified as "Web Servers" tools.
Pow and Unicorn are both open source tools. Pow with 3.47K GitHub stars and 259 forks on GitHub appears to be more popular than Unicorn with 1.35K GitHub stars and 249 GitHub forks.
What is Pow?
What is Unicorn?
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What tools integrate with Unicorn?
Pow is what we use for development on our local machines. It's easy to setup, and easy to maintain since it also eliminates the need for maintaining a /etc/hosts file.
Rolling deploys are awesome! We use Unicorn to keep downtime to a minimum as we iterate quickly for our clients.