Dr. Hackhofer Ltd. , Vienna
- Insurance software package development since 1991

Baustoffe Ehrlich Ltd. , Vienna
- Price-list software development since 1990

Baustoffe Ehrlich Ltd. , Vienna
- Ehrlichlist price-list application support since 1990

ib-data Ltd. , Vienna
- Costing application development since 1991

ib-data Ltd. , Vienna
- Costing application support since 1991