There is no size limit of opening files. The program supports working with very large drawings through the effective use of memory. Opening drawings from the memory card of the device. Does not require Internet connection and registration for working with drawings. Ability to work with drawings located directly in Google Drive. Adding comments and replies (if the drawing was stored in Google Drive). The ability to view both 2D and 3D drawings. Support for 3D views (including users views). Photo-realistic images of 3D models using ray tracing. Support layouts and viewports. Support external references. Flexible settings environment. Manage layer settings. Full support for visual styles. Lineweights support. Installing custom fonts and shape files. Property inspectorOur goal is to create a full-fledged CAD system, not inferior to their desktop counterparts. Keywords: free cad softwaredwg viewerviewer 3Ddwg editordrawing editordwgeditor.