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H2O vs Phusion Passenger

H2O

5.7#28 in web server software
LinuxmacOSSelf-hosted
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What both publish

FactH2OPhusion Passenger
DeploymentThe install guide documents building from source with CMake and lists binary packages for FreeBSD, macOS Homebrew, several RPM distributions, and Docker.Passenger can run locally or on a remote cloud server, and its features page also describes Docker integration.
PerformanceThe maker says H2O provides quicker responses with less CPU and memory-bandwidth use than older-generation web servers.Passenger says it supports evented I/O and multiple concurrency models, and includes Turbocaching.
SecurityThe repository has a security advisories page listing reported vulnerabilities and fixes, and asks users to report vulnerabilities by email.Passenger says it defends against slow client attacks and common HTTP parser exploits and uses privilege separation.
Security reportingSecurity issues should be reported privately to [email protected].Phusion directs users to report possible security problems by email to [email protected] and says it works to resolve vulnerabilities and communicate fixes.
SupportThe FAQ directs users with problems to GitHub issues tagged as FAQ.Support tiers offer between one ticket per year and unlimited tickets, with stated response times ranging from five days to two hours.

H2O plans

No prices published.

Phusion Passenger plans

  • Passenger Enterprise Bronze supportFree
  • Passenger Enterprise Silver support$23.52 a year
  • Passenger Enterprise Gold support$89.11 a year
  • Passenger Enterprise Diamond support$308.19 a year
  • Passenger EnterprisePriced on request

Pick H2O if…

You want what its maker publishes above — check its page for the details.

Pick Phusion Passenger if…

You want what its maker publishes above — check its page for the details.

Charts they share