Open Source Robotics Foundation (OSRF) is a participant in Google's Summer of Code and Gnome Foundation's Outreach Program for Women. Accepted students will work with OSRF mentors to develop code for Gazebo, ROS, and CloudSim.
Take a look at OSRF's GSoC project list and OPW project list. These projects are only suggestions, and we highly encourage applicants to propose different projects. Make sure to contact OSRF to discuss project ideas and any questions you may have. OSRF maintains two mailing lists: firstname.lastname@example.org and email@example.com.