Using FOSS for the last 15 years. Enormously benefited from FOSS, an advocate of businesses contributing to FOSS. I would like to help individuals and organizations willing use FOSS. I have reasonable experience in these tools :
Frappe and ERPNext : 7 years
FreeCAD - 3D parametric modeller
KICAD: PCB Design Sofware
Qt-C++
Running small org. (100 computers) fully on Ubuntu