The GNU Hurd project has again been participating in the Google Summer of Code, under the GNU umbrella, GCC umbrella, and Debian umbrella.
Accepted projects
GNU: Improve the GDB Port for GNU Hurd
by Yue Lu
See the project's public page and blog.
GCC: Porting the GCC go language frontend on the GNU/HURD kernel
by Fotis Koutoulakis
See the project's public page, Fotis' user page, and blog.
Debian: Debian GNU/Hurd Debianish initialization
by Justus Winter
See the project's public page, detailed page, blog, and notes.