* Aug 2009: Parallels company is in Top 10 Linux kernel contributors with their patches for Linux containers. Our contributions to the kernel at that time was PID, IPC, and network namespaces, with the last one being the biggest.<ref>[http://www.linuxfoundation.org/sites/main/files/publications/whowriteslinux.pdf|Linux Kernel DevelopmentHow Fast it is GoingReport, Who is Doing It, What They are Doing, and Who is Sponsoring It: An August Aug 2009 Updateupdate]</ref>