Google Summer of Code
Google Summer of Code is a global, online program focused on bringing new contributors into open source software development. GSoC Contributors work with an open source organization on a 12+ week programming project under the guidance of mentors. (GSoC Website). GNU Radio has participated in GSoC since 2012 with a high success rate.
For previous and currently ongoing projects as well as success stories, read the page of past GSoC projects.
List of ideas
This year's Summer of Code ideas are on this page.
Many good ideas from previous years are on the old ideas list. If you are interested in one of these ideas try to contact the mentor and also send messages to the GNU Radio mailing list and chat.
ESA Summer of Code in Space
SOCIS: The "ESA Summer of Code in Space" is a GSoC-inspired, yet different event sponsored by the European Space Agency (Website. GNU Radio participated in SOCIS from 2015 through 2017.