The Wikimedia Foundation has participated in the
Google Summer of Code
every year since 2006.
Google Summer of Code (GSoC) is a program sponsored and run by Google.
It is an online, global program focused on bringing new contributors to open-source software development.
GSoC contributors work with an open-source organization on a 12+ week programming project under the guidance of mentors.
The WMF's participation is overseen by Wikimedia's
Developer Advocacy
team.
See full program timeline here.