trustsec IT solutions GmbH
trustsec is a Debian development partner and pays two Debian developers to work on the S/390 port of Debian. They also host the Web portal for Debian on zSeries (S/390) and sponsored the free Debian CDs for LinuxTag since 2001, both with money and work time.
trustsec offers customer support, consulting and training for Debian on the Intel PC architecture (i386), PowerPC and IBM zSeries (S/390) and is specialized on network security and software development.