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Free 2D DWG/DXF CAD for Linux in the spirit of classic AutoCAD — keyboard drafting with acad.pgp aliases, faithful DWG round-trip, paper space and dimensions, plus surveying and terrain plugins (points, construction chart, contours, profiles, earthworks, UTM georeferencing, global DEM, satellite imagery, Google Earth KML)
Software libre de presupuestos de obra civil (GPL-3.0): ACU, Gantt con ruta crítica e ida y vuelta con MS Project, fórmula polinómica con índices INEI, control de obra y 13 reportes con formato configurable. Importa S10, PowerCost y Delphin.