Phusion Passenger, the most popular Ruby app server, has just released version 4.0.1 with many performance, feature and stability improvements.

The Phusion Passenger application server, version 4.0 RC 6, has been released.

This article teaches how to tune Phusion Passenger's MaxPoolSize and concurrency settings.

Remember the recent Rubygems.org vulnerability? We don't want all that to happen again do we? But the responsibility lies partly with us, the gem developers.

We at Phusion have already signed most of our repositories and gems with our PGP key, which in turned is signed by the rubygems-openpgp CA. Will you be the next to sign?

Read the announcement to see what has changed.

Phusion Passenger 4.0 beta 2 is out, and this release focuses on stability.

Rack 1.5.0 introduced a new "socket hijacking" API. This article explains what the API is and how it can be used.

Out of Band Work can drastically reduce web app response time by running the GC outside the normal request/response cycle.

In light of yesterday's Rails SQL injection vulnerability, this article discusses how the Rails session secret can be secured in a better manner

This blog post explains the recent vulnerability, how it works and what the facts and non-facts are.

In this case study, we see how the $100MM annual revenue Nedap Healthcare uses Phusion Passenger Enterprise to serve over 150,000 clients in the healthcare sector per day and billions of requests.

Multiple Ruby versions, evented I/O, real-time response buffering, Python WSGI support and much more.

Phusion Passenger Enterprise has introduced a new EULA with many favorable terms and conditions.

This article explains how to debug frozen/stuck processes (including Ruby-specific tips), how frozen processes affect web applications and how Phusion Passenger deals with them.

Many of you have been waiting for this moment. For some time now we’ve not only been talking about Phusion Passenger 3.2, but also about Phusion Passenger Enterprise. You can read more about their release progress here.

More information at https://github.com/phusion/juvia

This version has many bug fixes.

Phusion Passenger 3.0.0 final is here. See the announcement for details.

Please read the announcement for details.

Can Phusion Passenger be easier? Why yes it can.

The focus of this Technology Preview is on stability, robustness, availability and self-healing ability.

Phusion Passenger 3 is up to 55% faster.

As discussed by Igvita.com's "Rails Performance Needs an Overhaul" article, multithreading is hindered by broken native extensions. This article teaches you how not to make those mistakes.

This article reflects on the recent Igvita.com "Rails Performance Needs an Overhaul" article.

The old EncryptedCookieStore plugin by ThinkRelevance had gone defunct so we at Phusion rewrote one from scratch. It's extracted from a client project. Announcement here.

This release's focus is on bug fixes and improving polish. A lot of bugs have been fixed. Please check the announcement for details.

The next version of Ruby Enterprise Edition will feature some pretty large and exciting improvements. Please join the third REE sponsorship campaign to make this happen. Thank you for your support!

Please read the announcement for details. This version also fixes any Rack problems that you might have encountered since the Rack 1.0.0 release yesterday.

Phusion Passenger for Nginx and it's not an April Fool's joke!

With various bug fixes. Please read the announcement.

Help us confirm possibly outdated issues. :)

With many improvements.

Phusion Passenger 2.1 beta is about to be released, and it contains many improvements. But before we release 2.1 beta, we'd like to ask the support of the community. We've just launched the first Phusion Passenger community sponsorship campaign. If you've ever wanted to show your gratitude to Phusion Passenger, then this is your chance! Thanks!

Announcement is here.

This is a minor bugfix release. Please read the Phusion blog for the announcement.

This release includes many enhancements, such as proper support for OS X, Solaris and 64-bit, as well as more garbage collector enhancements. See the full announcement.

Important bugs have been fixed. See the Phusion blog for the announcement.

See the Phusion blog for details. This is the version that includes support for global queuing.

Phusion has recently released daemon_controller, a library for robust daemon management. Description and tutorials are available on that page.

Ruby 1.8.6-p230/1.8.7 include fixes for the recently discovered security vulnerabilities, but they also break some apps. Phusion has backported the security patches to Ruby 1.8.6-p111, and made a Ruby Enterprise Edition release based on that. This version is compatible with all your apps.

Phusion Passenger 2.0 RC 1 and Ruby Enterprise Edition have been officially released. This time for real.

RubyEnterpriseEdition.com shows some mysterious diagrams. Thin, Mongrel, Passenger and LiteSpeed are being compared. Can anyone solve the riddle?