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hsCADence - hsCADence is a CAD document conversion tool. It converts to/from DWG/DWF/DXF, supports six different CAD file versions (r12, r13, r14, AutoCAD 2000, 2004, 2005), exports to PDF, BMP and JPEG, and supports command line scripting and batch processing.

hsCADView - View, print, zoom, pan, and rotate 2D and 3D Cad Files (DWG, DXF, DWF,DXB). Convert between various document types (DXF, DWG, DWF, and DXB) and versions (r12, r13, r14, AutoCAD 2000, and AutoCAD 2004) and export to images (JPEG, BMP), and PDF files.

Water Garden Studio TRIAL - Design your Water Garden, House, Deck, and surrounding landscape with Water Garden Studio. Walk through your designs in fast, photo-realistic 3D. It's surprisingly realistic, easy & fun.

MITCalc - Bolted connection - Geometrical design and strength check of a prestressed bolt connection, loaded by static or cyclic loading resp., acting both in the axis of the bolt and in the plane of the connected parts. Calculation support many 2D CAD systems

MITCalc - Beam Calculation - Calculations of straight, maximum three times static indefinite beams with constant axis-symmetrical profiles. Simple definition of the beam type, 20 types of cross sections, graphic illustration of the moment, stress, deflection and bending angle.