From the Site:

Passenger (often known as “mod_rails“) is an Apache module developed by Phusion, a small Dutch IT consultancy, that makes it easy to deploy Rails applications on Apache-based stacks. Passenger follows on well from the popular “No True mod_ruby Is Damaging Ruby’s Viability on the Web” discussion of January 2008 in that it mostly solves the Rails deployment issue (see SwitchPipe for an alternative that can deal with non-Rails frameworks).

Since its launch in April, Passenger has become quite popular and a lot of developers are already using it to rapidly deploy Rails sites. Even popular budget Web hosting company Dreamhost has got in on the action, and is offering cheap, Passenger-based Rails application hosting. The de-facto Ruby (and Rails) deployment system seems to change rapidly (remember Apache+FastCGI, then lighttpd+FastCGI, then Apache+Mongrel, then Nginx+Mongrel…?) and while Passenger may or may not be a de-facto standard in a few years’ time, it’s certainly becoming the standard for now, so jump on board!

To help with your leap on to the Passenger bandwagon, I’ve collected together some of the better resources and blog posts of recent weeks covering its use:

See the List