GAEB-online sells software on the topic of GAEB tenders. In recent years electronic data exchange has become inseparable from the working world of skilled craftsmen. In the areas of tenders and offer preparations, the GAEB interface has become established for the exchange of service specifications and associated offers. Almost all current, commercial software solutions and tender programmes in Germany work with this interface which, among other things, permits simple data exchange between planner and workshop. GAEB-Online products are already used by more than 5,000 customers for rapid calculations with MS-Excel®, for example, and for electronic tender submissions in the GAEB DA84 format.