Need advice about which tool to choose?Ask the StackShare community!

Passenger

1.4K
262
+ 1
199
Puma

367
221
+ 1
19
Unicorn

485
354
+ 1
294
Get Advice from developers at your company using Private StackShare. Sign up for Private StackShare.
Learn More
Pros of Passenger
Pros of Puma
Pros of Unicorn
  • 43
    Nginx integration
  • 36
    Great for rails
  • 21
    Fast web server
  • 19
    Free
  • 15
    Lightweight
  • 14
    Scalable
  • 13
    Rolling restarts
  • 10
    Multithreading
  • 9
    Out-of-process architecture
  • 6
    Low-bandwidth
  • 2
    Virtually infinitely scalable
  • 2
    Deployment error resistance
  • 2
    Mass deployment
  • 2
    High-latency
  • 1
    Many of its good features are only enterprise level
  • 1
    Apache integration
  • 1
    Secure
  • 1
    Asynchronous I/O
  • 1
    Multiple programming language support
  • 3
    Convenient
  • 3
    Free
  • 3
    Easy
  • 2
    Multithreaded
  • 2
    Default Rails server
  • 2
    First-class support for WebSockets
  • 2
    Consumes less memory than Unicorn
  • 1
    Lightweight
  • 1
    Fast
  • 81
    Fast
  • 59
    Performance
  • 36
    Web server
  • 30
    Very light
  • 29
    Open Source
  • 27
    Rack http server
  • 18
    Load balancing
  • 14
    Great process management

Sign up to add or upvote prosMake informed product decisions

Cons of Passenger
Cons of Puma
Cons of Unicorn
  • 0
    Cost (some features require paid/pro)
  • 0
    Uses `select` (limited client count)
  • 4
    Not multithreaded

Sign up to add or upvote consMake informed product decisions

What is Passenger?

Phusion Passenger is a web server and application server, designed to be fast, robust and lightweight. It takes a lot of complexity out of deploying web apps, adds powerful enterprise-grade features that are useful in production, and makes administration much easier and less complex.

What is Puma?

Unlike other Ruby Webservers, Puma was built for speed and parallelism. Puma is a small library that provides a very fast and concurrent HTTP 1.1 server for Ruby web applications.

What is Unicorn?

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.

Need advice about which tool to choose?Ask the StackShare community!

What companies use Passenger?
What companies use Puma?
What companies use Unicorn?

Sign up to get full access to all the companiesMake informed product decisions

What tools integrate with Passenger?
What tools integrate with Puma?
What tools integrate with Unicorn?
    No integrations found
      No integrations found

      Sign up to get full access to all the tool integrationsMake informed product decisions

      Blog Posts

      +44
      109
      49841
      What are some alternatives to Passenger, Puma, and Unicorn?
      NGINX
      nginx [engine x] is an HTTP and reverse proxy server, as well as a mail proxy server, written by Igor Sysoev. According to Netcraft nginx served or proxied 30.46% of the top million busiest sites in Jan 2018.
      Apache HTTP Server
      The Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Originally designed as a replacement for the NCSA HTTP Server, it has grown to be the most popular web server on the Internet.
      Microsoft IIS
      Internet Information Services (IIS) for Windows Server is a flexible, secure and manageable Web server for hosting anything on the Web. From media streaming to web applications, IIS's scalable and open architecture is ready to handle the most demanding tasks.
      Apache Tomcat
      Apache Tomcat powers numerous large-scale, mission-critical web applications across a diverse range of industries and organizations.
      OpenResty
      OpenResty (aka. ngx_openresty) is a full-fledged web application server by bundling the standard Nginx core, lots of 3rd-party Nginx modules, as well as most of their external dependencies.
      See all alternatives
      How developers use Passenger, Puma, and Unicorn
      SmartLogic uses
      Unicorn

      Rolling deploys are awesome! We use Unicorn to keep downtime to a minimum as we iterate quickly for our clients.

      pludoni GmbH uses
      Passenger

      "deploy + forget" application deployment with good default configuration.

      Avalanche Network uses
      Unicorn

      Our super server that runs a web instance and a worker instance.

      Trustroots uses
      Passenger

      Serving NodeJS app together with Nginx.

      douglasresende uses
      Unicorn

      I use with my Ruby on Rails projects.

      Karma uses
      Unicorn

      Our go-to Ruby application server.

      Oded Arbel uses
      Puma

      Server for Rails-powered API

      Satoru Ishikawa uses
      Puma

      Heroku で動かすWebサーバー

      Jamie Yun uses
      Puma

      expert