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Free applications and CAD utilities (mostly our freeware & trials)
Our shareware (trial)
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Go to file Xls2Curve/Curve2Xls - draws curves or points from coordinates in the selected range in the active Excel sheet, exports polyline/curve coordinates to Excel (trial version) 47kB 28.8.2014
V1.4
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CAD Utilities and add-ins
Go to file 2DPlot - generate AutoCAD 2D curves with parametric math functions - XY=F(U); VLX+FAS for AutoCAD (Win+Mac) 22kB 12.3.2024
V1.2
More information  
Go to file 2Dunfold - unfolds 2D curves to straight polylines (VLX for AutoCAD) 12kB 19.4.2009
V1.2
   
Go to file 3Dintcurves - find intersections between lines and 3D solids (VLX LISP for AutoCAD) 15kB 5.10.2021
V1.0
   
Go to file AddLen - add total length of lines and curves by layers (VLX for AutoCAD) 11340 9.12.2022
V1.8
   
Go to file BrkList - breaks and marks selected curve at multiple points specified by a list of coordinates (stations) 9444 3.5.2009
V1.1
   
Go to file Catenary curve (spline; cable sag line) generator (LSP LISP for AutoCAD, by G.Chanteau) 5kB 18.7.2022    
Go to file ClosestPt - find shortest line between points on two curves (VLX LISP for AutoCAD) 28kB 26.10.2023
V1.0
   
Go to file CurvComb - curvature or radius comb on curves (VLX LISP for AutoCAD) 16kB 20.9.2023
V1.0
More information  
Go to file Curve2Lin - convert any curve to segmented (poly)line, keep vertices, optimize (CS+ bonus for AutoCAD) External 16kB 4.5.2019
V1.2
   
Go to file CurveAxis - draw 2D/3D axis between two curves (VLX LISP for AutoCAD) 19kB 27.10.2023
V1.4
   
Go to file CurveText - draw text along a curve (arc, circle, polyline...), AutoCAD LSP by A.Gumula 14.3kB 5.7.2006 Description  
Go to file DimCurve - dimension length of any 2D/3D curve (or distance on curve) in AutoCAD (VLX Lisp) 17.5kB 12.4.2017
V1.1
More information  
Go to file DivBreak/MMeasure - breaks polylines and curves to a defined segment number/length - combines the BREAK and DIVIDE/MEASURE (bulk Measure) commands 13kB 20.2.2023
V1.3
More information  
Go to file DrawPoly - animate drawing of any curve (VLX LISP for AutoCAD) 14kB 12.12.2017
V1.0
   
Go to file KLOT - Clothoide curve - arc to line (LSP for AutoCAD) 3231 16.2.2014    
Go to file LGC/LGC2/LGC3/LGC4 - measure and label distances along a curve (VLX/LSP) 21kB 8.1.2024
V1.6
   
Go to file Lin2Cyl/Cur2Cyl - converts selected lines or curves to 3D cylinders or tubes (VLX LISP for AutoCAD) 17kB 10.1.2022
V1.0
   
Go to file MCurve2Wall.dyn - Dynamo script, convert model curves to Revit walls 70kB 4.2.2019    
Go to file MEASURE2 - performs the MEASURE command from both ends to the middle of a curve (.LSP for AutoCAD) 1kB 25.7.2007    
Go to file PerpFrom - draw perpendicular from a curve foot, dynamic, transparently 'PF (VLX Lisp for AutoCAD) 14.5kB 23.3.2020
V1.1
   
Go to file RotAlign - align blocks to curve (CS+ bonus: natočení bloků podél křivky) External 14kB 23.8.2016
V1.0
More information  
Go to file Scatter - move/rotate/scale/recolor selected DWG objects (or draw) randomly in 2D or 3D or curves - orchard, parking, crowd, vertices... (VLX Lisp for AutoCAD and LT) 29kB 9.4.2023
V2.1
More information  
Go to file Seg2P and SegCur - returns coordinate of a point at a given ratio between 2 points or on a curve - a generalized M2P (VLX Lisp for AutoCAD) 9782 6.1.2011
V1.1
   
Go to file Snake fill (floor-heating curve) of an area between two curves (LSP for AutoCAD, by M.Ribar) 21kB 28.11.2021    
Go to file Snap2Curve - snap points, blocks, cogos onto the nearest curves (VLX LISP for AutoCAD) 15.5kB 18.8.2023
V1.0
   
Go to file SphereProj - project 2D curve(s) to a sphere (freeware VLX LISP for AutoCAD) 14kB 9.12.2012    
Go to file SplineUnfold - unfold 3D spline to 2D curve (LSP for AutoCAD) 1561 8.11.2021    
Go to file TraceCurve - creates traced points/blocks (stations) in given distances along a curve (VLX LISP for AutoCAD) 17kB 21.11.2017
V1.2
   
Go to file xCurve - export XY vertices from curves, one curve per line (VLX for AutoCAD) 13kB 15.12.2010
V1.0
   

How to load a LISP application (.LSP/.VLX) into AutoCAD? See the Tip 7245.

Many other files also on Arkance Systems Helpdesk, CAD blocks in the Block catalog.