According to a new post to their blog, the PHPWomen group has announced a partnership program for projects that want to put out a message of encouraging diversity in contributors:

As quoted from the information page about the partnerships:

PHPWomen has launched a partnership program for open source projects that are committed to embracing diversity and providing a welcoming and friendly atmosphere for contributors. We work closely with project leaders to identify specific areas of need, and will actively encourage our members to participate by promoting those needs through various channels. In return, the project leaders will ensure that newcomers to their projects will be welcomed and their contributions appreciated. This includes fostering an open and friendly environment for all newcomers, not just females.

The goal of the project is to encourage inviting environments for open source projects where developers feel like they're given a chance to contribute equally and to provide something more specific than "here's a project that needs help - go for it".

There's already several projects that are on the list including Spaz and the PHP Documentation team. You can find out more specifics on what they're looking for in contributions on the Opportunities page.