Raster to Vector converts scanned drawings, maps and raster images (such as BMP, JPG, TIF, GIF, etc) into vector formats (such as DXF, HPGL, EMF, etc). You can scan old plans, archive drawings, or even photos and convert them into useful CAD data.
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ZWCADis a cost-effective, DWG file format compatible CAD software. With basic drafting functionalities of CAD Software, ZWCAD also provides key 2D functions to increase your efficiency, such as rendering and parametrics.
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Copan for Windows enables you to calculate coordinate geometry (COGO), process field surveys, adjust map traverses, perform map/deed closure checks, calculate areas and perimeters, transform coordinates, and import/export Ascii files. It\\'s free.
Downloads: 47686 - Freeware - Download Now
Compact Scientific Calculator 36 for scientists, engineers, teachers, and students. The calculator was designed with purpose to fit Netbooks and Notebooks with small display. Of course, the calculator can be used on laptop and desktop computers.
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This calculator calculates double integrals of large variety of functions by tanh-sinh quadrature scheme. Numerical values are calculated with precision 15-16 digits.
Downloads: 47016 - Shareware - Download Now