GeoDLL - Version 19.01 GeoDLL is a Geodetic Development Kit / Geodetic Function Library with worldwide 2D and 3D Coordinate Transformation, Datum Shift, Meridian Convergence and Extra Parameter with highest accuracy. Furthermore: Helmert and Molodensky Parameters, NTv2, HARN, INSPIRE, EPSG, Digital Elevation Model (DEM), distance and Time Zone calculations and much more. GeoDLL for geodetic and GIS development is available as 32Bit and 64Bit DLL and as C++ source code.GeoDLL supports the development of geodetic software on various platforms by providing geodetic functions. Thus, geodetic functions of GeoDLL can be linked to programs written in C, C++, C#, Java, Pascal, Delphi, MS-Access, Visual Basic, Visual Objects or which are written in other programming languages.The most important application of GeoDLL is to include professional Coordinate Transformations in own programs. These Coordinate and Reference Systems are supported: The current and historical Systems of all countries of Europe - The European ETRS89 systems forced by INSPIRE - The US and Canadian NAD, NTv2,