Open Source SIEM
Building automation (like KNX or OpenHAB) software (like CometVisu).
A multi-platform universal log collector and forwarder
Scalable, distributed monitoring system for high-performance computing
a GUI for virtual machines using QEMU as the backend
Chromium + Ubuntu = Cub Linux
Client-server networking library
a Finding, Sorting and Converting free software (file manipulation)
DBIS Reference Implementation
gnupasswd - gnu change user password
USB Drive Writable Linux Distribution
Another HMI/SCADA set of tools written in C++(Qt) with python bindings
A battery monitor for Shells and the Taskbar
Technologies for automating food production on various scales