Phusion Passenger is unclaimed —

Phusion Passenger

Enterprise grade web app server for Ruby, Node.js, Python·phusionpassenger.com

Passenger is a web app server that integrates with Apache and Nginx to run and auto-manage web applications, improving performance, security, reliability and scalability. It supports Ruby, Node.js and Python from a single instance and is used by over 650,000 sites, from small side projects to business-critical apps handling billions of requests per day. It is available as a free open source edition and as a paid Enterprise edition with additional premium features and support plans.

What it's for

Running and auto-managing Ruby, Node.js and Python web appsDeploying multiple apps of different languages from a single Passenger instanceServing business-critical apps with high request volumesMass deployment of hundreds of applications with a single commandZero-downtime application redeployment (rolling restarts)Live debugging and inspection of running applications

Features 18

Automatic Nginx and Apache integration
Automatic process management and crash recovery (Watchdog)
Copy-on-write preloading and fair traffic distribution
Docker integration
Error resistance / automatic deployment cancellation on error
Live debugging via IRB console, Ruby debugger, or GDB
Mass deployment of many applications with a single command
Multi-CPU-core utilization
Multi-process and evented I/O concurrency models
Multithreading (Ruby only)
OS packages via APT and YUM, plus RubyGem installation
Polyglot support for Ruby, Node.js and Python from one instance
Privilege separation for security
Protection against slow client attacks and HTTP parser exploits
Request inspection, backtrace dumps, CPU and memory stats
Resource limiting for applications
Turbocaching using CPU L1/L2 cache for faster page serving
Zero-downtime rolling restarts

At a glance

free tieropen sourceself-hostable

DeploymentSelf-hosted

PlatformsLinux

Fordevelopers, businesses

CompanyPhusion B.V.

Integrations

ApacheNginxDocker

Resources

Docs

Pricing

Enterprise pricing is calculated dynamically based on total RAM (GB) of production and non-production server clusters, plus a chosen support tier (Bronze/Silver/Gold/Diamond, priced per GB/year). Payments processed via FastSpring (PayPal or credit card); wire transfer/PO available for orders over $40,000. Custom quotes available on request.

Passenger open sourceFree

Free, open source edition of Passenger.

Fewer premium features than Enterprise (per comparison table)

Passenger Enterprise - Production Cluster$23.52/mo

Yearly billing saves up to 33% versus monthly. Custom quotes available for orders exceeding $40,000.

Priced according to total RAM (GB) of the production server cluster

Passenger Enterprise - Non-Production Cluster$11.14/mo

Yearly billing saves up to 33% versus monthly.

Priced according to total RAM (GB) of the non-production server cluster

Save up to 33% by opting for a yearly subscription instead of monthly.