CPACS is used in different national and international aircraft design projects. CPACS related software varies from supporting libraries such as TiXI and TiGL to aircraft design software such as VAMPzero. In addition to CPACS based software there are also many tools for which CPACS interfaces have been implemented. A common way for connecting a tool with CPACS is to develop a tool wrapper which translates CPACS data to the tool specific input format, and the tool results from the original output format back into the CPACS format. The advantage of this approach over the using CPACS directly is that you do not need to modify your tool.