Gaël Marziou

I have used several continuous integration systems over last 7 years for building J2EE applications: Cruise Control, AntHill OS, AntHill pro 2.6 and 3.
I gave up on AntHill pro 3 because it was too complex to setup and developers did not like the busy UI.
Hudson on the contrary is very easy to setup and uses only XML configuration files instead of a database which is always a problem for backups and exports.
My Hudson configuration is under change control in Subversion.
Hudson 's UI is very easy to use and developers find their way very quickly.
My team current configuration is based on Hudson on top of Tomcat using ant, Subversion and ViewSVN. We plan to migrate to Maven which is also supported by Hudson.
There's no real manual only a wiki for starting up and then the online help is usually enough. If you need help, the mailing list is very helpful and the author Kohsuke Kawaguchi is very responsive and also very fast to fix issues.

Easy way to install Ruby on Rails on Windows.
You have to be careful if you are already running Apache+MySQL+PHP on your machine as InstantRails behaves as it was alone and changing its settings (e.g. port number) can be difficult especially when you choose InstantRails to avoid this burden.

I found it very useful when you have junior developers in the team, this tool really helps them to learn good coding practices quicker.
I regret just that adding new rules can really be difficult depending on what you want to implement, if it was easier I think that senior developers could contribute more.