CivilDraw is a serious desktop application for civil engineering work — the kind of work where a drawing has thousands of features and your rendering pipeline either keeps up or doesn't. It's built on a native C++ rendering bridge, with the rest of the application written in .NET 10 / WPF / Prism for a tooling experience that scales with the project.
Geospatial data is first-class: GDAL, OGR, PROJ, and NetTopologySuite ship in the box. Reporting goes through QuestPDF and ClosedXML, cloud sync rides on the same shared platform as the rest of the suite, and an integrated diagnostics tool helps you debug surveys, projections, and tile pipelines without leaving the app.