Open Source Projects

The staff members of Fre(i)e Software GmbH are regular contributors to Free & Libre Open Source projects. Contributions are part of their customer driven company work, but also many of your staff members contribute their voluntary work to a variety of Open Source projects.

Debian Logo


Debian GNU/Linux is a free and universal operating system, that is developed by an international community of more then 1.000 people all accross the world. Together, they are the Debian project. At Fre(i)e Software GmbH, we intensively use Debian for implementing our customers' demands. People in the company have been contributing to Debian for up to ten years (and more) and have have done their bit to sustain the continuous improvement of Debian. Whenever possible we try to give back our discoveries and improvements to the Debian community while working on customer projects. For us, giving back to Open Source projects is our means to turn the word sustainability into action.

Members of our team are involved in, amongst others, these Debian teams:

Ubuntu Touch Logo


Ubuntu Touch is a mobile operating system for tablets and phones based on the Ubuntu GNU/Linux distribution. Ubuntu Touch is powered by the convergent operating environment Lomiri: Being mainly optimized for touch based device interactions, Lomiri can also be used on desktop computers and at runtime switch between those two usability models. Ubuntu Touch is developed by an international community of paid contributors and volunteers under the umbrella of the UBports Project.

Mike Gabriel currently works on packaging the entire Ubuntu Touch software stack for Debian and provides consulting around release and package management. Mike Gabriel and Robert Tari do software development on the Ayatana Indicators project which has become a core component of Ubuntu Touch’s Lomiri operating environment (instead of Ubuntu Indicators). Starting with October 2021, Guido Berhörster will also join the UBports team with initial focus on documentation and release management assistence.

Debian Edu Logo

Debian Edu / Skolelinux

Debian Edu / Skolelinux is a special adaptation of the universal Debian GNU/Linux operating system targeting being used as a school IT system. Debian Edu is maintained by an international developer team within Debian and is being used around the world. The Debian Edu / Skolelinux installer allows one to set up an entire school IT server infrastructure, provides an administration interface for the site and ships / recommends a wide range of educational software.

Mike Gabriel joined the Debian Edu team in 2011 and has been working as co-maintainer and developer for the project since then. Mike has been providing Open Source consulting and sysadmin services for schools via his personal company DAS-NETZWERKTEAM and, together with Daniel Teichmann, collected a wide range of expertise on Open Source learning environments for more than ten years now, being IT manager for various schools within Northern Germany.

Ayatana Indicators

The Ayatana Indicators Project provides indicator applets and shared libraries for application indicators and system indicators. Indicators can be used for displaying system or application status, capturing and displaying system notifications, and for interacting with system functionalities. All indicators are coherently display in a designated area provided by the desktop environment (e.g. the desktop environments panel).

The Ayatana Indicators project has been forked from Ubuntu’s Indicators in 2015, after Canonical Ltd. decided to discontinue the development effort on the Unity7 desktop environment. Ayatana System Indicators are distribution independent and desktop agnostic. They are interoperable with Xfce, MATE, KDE and Lomiri.

Currently (as of 2021), Ayatana Indicators and the UBports Project are cooperating on getting Ayatana Indicators optimized for usage in Ubuntu Touch (i.e. the Lomiri Operating Environment). This project is currently funded by the UBports Foundation.

X2Go Logo


X2Go is a remote (desktop) computing solution that allows for remote access to GNU/Linux desktops on low latency and low bandwidth internet/network connections. X2Go provides various operation modes: access to already active desktop sessions, starting of so-called headless desktop sessions and accessing them remotely, or embedding single (published) remote applications into a local desktop environment.

X2Go’s client component is available for MS Windows, GNU/Linux, FreeBSD and Mac OS X. Since 2021 a web based X2Go client implementation has become available that allows one to connect to a GNU/Linux desktop from a web browser.

X2Go suports audio in remote sessions, file sharing, printer sharing, and remote assistance. Every session can be suspended and resumed later from the same or another client machine. X2Go also offers a thin client environment (TCE). For large fleets of X2Go Client machines the session profile management can be provisionied to those devices via an X2Go session broker.

Since September 2010, staff members of Fre(i)e Software GmbH (formerly via DAS-NETZWERKTEAM) have been actively contributing to the development and improvement of X2Go.


MATE Desktop

MATE is a desktop environment for Linux and other Unix-like operating systems, that is built on traditional and intuitive usability concepts. MATE has been forked from the GNOME (version 2) desktop environment and is now an indepdent project with an international community of voluntary software developers.

Together with Martin Wimpress, Mike Gabriel is the package maintainer of MATE in Debian and is indirectly having an impact on Ubuntu MATE by providing the package base for their Ubuntu flavour.

Remote Web App

Remote Web App is a considerably fresh project (no logo, yet) that addresses remote client access and remote user support at enterprise scale.

The project has been set up by Mike Gabriel and is currently developed by Mike Gabriel, Daniel Teichmann and Jonathan Weth. The Remote Web App product is still in its prototyping phase.

Skolab Logo


Skolab is a secure, scalable and reliable groupware solution that integrates well-proven components for e-mail, a directory service and a web service. It also provides a standalone administration interface. Skolab has been forked from the final release of the Kolab 2 Groupware.

Mike Gabriel develops this project to meet company internal needs.