zetbox is an open-source software product used for efficient development, adjustment and extension of business applications. The core part is an integration platform guaranteeing overall data management. Using the zetbox as a basement a system can access formerly programmed applications which can be adjusted flexibly to match the client needs. Additionally the zetbox offers a portfolio of components that can be used as a solid base for client specific programming of business applications. Hence the zetbox is an interesting instrument for developers as well as companies.