PHPCI is a free and open source continuous integration tool specifically designed for PHP. We've built it with simplicity in mind, so whilst it doesn't do *everything* Jenkins can do, it is a breeze to set up and use.
We've got documentation on our wiki on [installing PHPCI](https://github.com/Block8/PHPCI/wiki/Installing-PHPCI) and [adding support for PHPCI to your projects](https://github.com/Block8/PHPCI/wiki/Adding-PHPCI-Support-to-Your-Projects).
Contributions from others would be very much appreciated! If you just want to make a simple change, simply fork the repository, and send us a pull request when you're ready.
If you'd like to get more involved in developing PHPCI or to become a maintainer / committer on the main PHPCI repository, join the [mailing list](https://groups.google.com/forum/#!forum/php-ci).
Your best place to go is the [mailing list](https://groups.google.com/forum/#!forum/php-ci), if you're already a member of the mailing list, you can simply email php-ci@googlegroups.com.