Unicorn alternatives and similar gems

Based on the "Web Servers" category.
Alternatively, view Unicorn alternatives based on common mentions on social networks and blogs.

The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

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Phusion Passenger

9.1 8.8 L2 Unicorn VS Phusion Passenger

A fast and robust web server and application server for Ruby, Python and Node.js
Goliath

8.1 3.7 L5 Unicorn VS Goliath

Goliath is a non-blocking Ruby web server framework
Thin

8.0 3.4 L5 Unicorn VS Thin

A very fast & simple Ruby web server
falcon

7.8 7.0 Unicorn VS falcon

A high-performance web server for Ruby, supporting HTTP/1, HTTP/2 and TLS.
Iodine

5.7 4.7 L3 Unicorn VS Iodine

iodine - HTTP / WebSockets Server for Ruby with Pub/Sub support
Reel

5.1 0.0 L4 Unicorn VS Reel

DISCONTINUED. Celluloid::IO-powered web server.
TorqueBox

5.0 0.0 L5 Unicorn VS TorqueBox

DISCONTINUED. TorqueBox Ruby Platform