• projectfactory
• sandburg
• DI Thomas Schreiner
• Credativ GmbH Germany

• SMS.at
• Key-Systems GmbH Germany
• Hetzner GmbH Germany / South Africa

• Debienna (Linux experts and developers in Vienna)*
• Linuxwochen

* Alexander Biedermann (MSc) is officially responsible for the name, he is logo designer, promoter and sponsor of Debienna - the Viennese association for the promotion of free software, Debian and Linux.