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IQCad is a free 2D CAD application for civil engineering and tunnelling, built with Free Pascal/Lazarus for Windows and Linux.
Features:
25+ entity types (Line, Polyline, Arc, Circle, Spline, Hatch, Text, Dimensions, Table, and more)
AutoCAD-style command line with object snaps and grip editing
Modify tools: Move, Copy, Rotate, Scale, Mirror, Offset, Trim, Extend, Chamfer, Fillet
Layers, linetypes, blocks, and configurable styles
Civil Engineering:
TIN surfaces with contours and spot elevations
Survey points with CSV import and point groups
Tunnel section lines with deviation analysis
Horizontal alignments with curves and spirals
LandXML import/export
File Formats: DXF (R12/R2000/R2018), LandXML, PDF, PNG, SVG,DWG ( using ODA converter or Librecad dwg reader)
Modern ribbon UI with dark theme, multi-document tabs, and map background layers.
Features
- 25+ CAD entity types (Line, Polyline, Arc, Circle, Ellipse, Spline, Hatch, Text, MText, Dimensions, Table, Multileader, Multiline, 3DFace, Image)
- Map background layers (OpenStreetMap, ESRI, custom)
- LandXML import/export
- Cross-platform: Windows and Linux (x86_64)
- OpenGL + GDI rendering
Project Samples
