Design Master HVAC is an integrated HVAC building design and drafting program that runs on top of AutoCAD. Drafting features include single-line and double-line 2D ductwork with automatic fittings and 3D ductwork. Duct sizing calculations include constant pressure drop, constant velocity, and static regain. Pressure drop in the duct system can also be calculated. Building load calculations are done using the ASHRAE CLTD method. More…

CAD Viewer for Pocket PC. Formats supported: DWG R9 thru DWG 20067, DXF R19 thru 2007, HPGL (PLT, HGL, RTL, PRN, etc.), CGM, BMP, JPG, TIFF, GIF, ICO. DWG/DXF layouts and 3D-Orbit are supported. Pocket PC DWG Viewer supports almost all entities, including hatches, rotated texts with top/bottom symbols, viewports, etc. More…

MITCalc is the multi-language mechanical and technical calculation package. It includes solutions for gear, belt and chain drives, springs, beam, shaft, bolt connection, tolerances, welding, shaft connection and many others. The calculations are compatible with many 2D and 3D CAD systems (AutoCAD, Iventor, Solidworks...) and support both Imperial and Metric units and are processed according to ANSI, ISO, DIN, EN, BS, Japanese and other standards. More…

Ashampoo Home Design 10 is a 3D home planning software that enables users to design, remodel, and furnish residential spaces. With a wide selection of furniture and decorative elements, rooms can be customized in detail. Every step of the planning process can be viewed in a realistic 3D preview, allowing for accurate design decisions before construction or renovation begins. More…

Simple, powerful and inexpensive CAD software for surveying. You can do triangulation, isolines, color-filled contour maps, sections, intersections, volume, editing XYZ files, simulation of rainwater runoff and much more. You can represent 4D points cloud and process hundreds of thousands of points or triangles, even on less powerful PCs. More…

AutoLISP source code can be run on AutoCAD or IntelliCAD (Bricscad, ProgeCAD, Cadopia, etc.), on any number of computers. There are programs for: Triangulation, Load XYZ and 4D files, B-spline control polygon and interpolated contour lines, Intersect 2 3DFACE and contour lines, Modify longitudinal profile, converts a DWG file to an XYZ file of points and custom "Hatch styles from a DWG". There are shareware versions. The price is per program. More…