Nowadays, construction has become a vast field, and humans have reached the level of creating skyscrapers – The Cloud Touching Buildings. The structure on which they or any big building nowadays is built, is made in DGN workstation systems. The DGN is basically an Extension for an Auto Cad file which consists of a map or blueprint of a building and is readable by Bentley systems, micro station and other mapping systems like Intergraph. The software are highly equipped for professionals and are for commercial use. With its high capabilities of customization, the user can create high-resolution 2D or 3D maps with exquisite precision and accuracy in relatively less time. Some of the software which supports DGN files are given in the list below. The software are in their own league are best and some of those are free, while some are trial only and should be purchased afterwards.