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Autodesk - free
Viewers
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Go to file Autodesk Design Review 2009 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 9.0/96, for Windows Vista/XP/2000 (free) install DWG TrueView and plugins External 42.9MB 25.3.2008 More information  
Go to file Autodesk Design Review 2010 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 10.0.0.108; for Windows Vista/XP (free) use the INFO button for a bootstrap installer; install also DWG TrueView and plugins External 36MB 25.3.2009 More information  
Go to file Autodesk Design Review 2011 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 11.0.0.86; for Windows 7/Vista/XP (free) use the INFO button for a bootstrap installer; install also DWG TrueView and plugins External 38MB 25.3.2010 More information  
Go to file Autodesk Design Review 2012 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 12.0.0.98; for Windows 7/Vista/XP (free) install also DWG TrueView External 47MB 19.7.2011 More information  
Go to file Autodesk Design Review 2013 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 13.0.0.82; for Windows XP/7/8 (free) install also DWG TrueView, see also the mobile version External 51MB 28.3.2012 More information  
Go to file Autodesk Design Review 2018 - view, print, measure and redline/markup 2D and 3D DWF and DWFx files, build 14.0.0.148; for Windows 7/8/10 (free) install also DWG TrueView, see also the mobile version External 421MB 5.4.2017 More information  
Go to file Autodesk DWF Viewer 7 EN (build 928) - fast viewer for DWF files (incl. DWF 6, 3D DWF, multi-page, print to scale, merged lines, relative links, object properties, assembly tree, BOM, etc., for WinXP/2000 - to autoinstall visit www.cadstudio.cz/dwf) for Win98 use ver.6.5 -- obsolete, use Design Review External 14.9MB 15.6.2006 More information  
Go to file Autodesk OnSite View 2 - view and redline DWGs on PocketPCs and WinCE PDAs (90-day trial) currently not available External 5.6MB 5.5.2002   Buy
AutoCAD
R2012
Go to file AutoCAD DGN Clean-up Tool - cleanup DWG from DGN linetypes for AutoCAD 2012 (CS+/VIP) External 7kB 26.4.2015    
Design Review, DWF, DWG TrueView, SketchBook, A360
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Go to file Autodesk A360 Mobile 3.3 for iPad/iPhone (iOS8+) - view and markup 2D/3D DWG, DWF, Revit, STEP, IGES, Fusio360 and 100 other CAD files, incl. offline (EN/DE/CZ) External 120MB 16.5.2018    
Go to file Autodesk A360 Mobile 3.4.2 for Android - view and markup 2D/3D DWG, DWF, Revit, STEP, IGES, Fusion360 and 100 other CAD files, incl. offline (EN/DE/CZ) External 37MB 21.8.2018 More information  
Tools (standalone, Autodesk)
Go to file AutoCAD Color Book Editor (ACB) - online External 100kB 2.10.2013    
 
Patches + updates
AutoCAD
R2013
Go to file AutoCAD 2013 EN off-line help (local, English) External 297MB 14.4.2012    
Go to file Lokální off-line česká nápověda pro AutoCAD 2013 CZ (full help CZ) External 297MB 14.4.2012    
R2014
Go to file Lokální off-line česká nápověda pro AutoCAD 2014 CZ (full help CZ) External 203MB 14.5.2013    
R2015
Go to file Lokální off-line česká nápověda pro AutoCAD 2015 CZ (full help CZ) External 190MB 18.5.2014    
R2016
Go to file Lokální off-line česká nápověda pro AutoCAD 2016 CZ (full help CZ) External 180MB 19.5.2015    
R2017
Go to file Autodesk AutoCAD 2015-2018 Geolocation Online Map Hotfix (Bing V8) External 2MB 20.6.2017    
Go to file Lokální off-line česká nápověda pro AutoCAD 2017 CZ (full help CZ) External 180MB 7.7.2016    
R2018
Go to file Lokální off-line česká nápověda pro AutoCAD 2018 CZ (full help CZ) External 211MB 21.3.2017    
R2019
Go to file Lokální off-line česká nápověda pro AutoCAD 2019 CZ (full help CZ) External 163MB 23.3.2018    
R2020
Go to file Lokální off-line česká nápověda pro AutoCAD 2020 CZ (full help CZ) External 186MB 30.3.2019    
AutoCAD LT
R2013
Go to file Lokální off-line česká nápověda pro AutoCAD LT 2013 CZ (full help CZ) External 234MB 18.6.2012    
Map, Civil 3D, Raster, InfraWorks, Vehicle
Civil2021
Go to file Civil 3D 2021 - country kit (HU) - templates, styles, symbols, linetypes - Hungarian standards External 41MB 22.5.2020 More information  
3ds Max, Maya, Mudbox, MotionBuilder, VRED
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Go to file Autodesk T-Splines Plug-in for Rhino (V3.4 for Rhino 5, Rhino 4) External 21MB 18.12.2012    
 
Free applications and CAD utilities (mostly our freeware & trials)
Our shareware (trial)
Go to file REPORTER 1.1 - line lengths and block counts in AutoCAD LT R1-R2002 (trial, full) [see CADstudio LT Extension] 1300kB 7.7.1998   Buy
Go to file REPORTER 1.2 - line lengths and block counts in AutoCAD LT R1-R2004 (trial, w/o VB runtime) [new version is now part of the "CAD Studio LT Extension" add-on] (needs VB runtime) 220kB 20.4.2003 More information  
Go to file SplineConvert - convert splines, ellipses, arcs to 2D polylines (A2002, trial) 210kB 12.12.2002 More information Buy
Go to file SplineConvert 2006 - convert splines, ellipses, arcs to 2D polylines (A2006/2005/2004, trial) 210kB 15.6.2006 More information Buy
Go to file SplineConvert 2009 - convert splines, ellipses, arcs to 2D polylines (A2009/2008/2007, trial) 461kB 29.5.2008 More information Buy
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
  Buy
CAD Utilities and add-ins
Go to file 2D3Dpoly - converts 2D polylines to 3D polyline objects (VLX Lisp for AutoCAD) 13kB 11.10.2016
V1.1
   
Go to file 2DpolyC - draw polyline using any length units (yd, ft, mi, inm, rod...) VLX LISP for AutoCAD+LT 19kB 19.12.2023
V1.1
   
Go to file 2Dunfold - unfolds 2D curves to straight polylines (VLX for AutoCAD) 12kB 19.4.2009
V1.2
   
Go to file 3DF2L - converts 3DFaces to Lines/Plines (LISP for AutoCAD) 2530B 17.8.2021    
Go to file 3Dintcurves - find intersections between lines and 3D solids (VLX LISP for AutoCAD) 15kB 5.10.2021
V1.0
   
Go to file 3DPolyC/3DPolyS - draw 3D polyline by entering 3Dlength,azimuth,slope or elevation,slope,2Dpoints (VLX Lisp for AutoCAD) 16kB 4.1.2018
V1.2
   
Go to file ACADtweet - Twitter for AutoCAD 2012/2011 - send and read tweets (statuses) directly from AutoCAD command line (.NET tool) 138kB 28.4.2011
V1.2
More information  
Go to file ACADtweet - Twitter for AutoCAD 2013/2012 - send and read tweets (statuses) directly from AutoCAD command line (.NET tool, installer) 1.5MB 14.4.2012 More information  
Go to file AddArea - add total area of polylines, regions and hatches by layers (VLX for AutoCAD) 21kB 9.12.2022
V1.6
   
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 AddV/DelV - interactively adds or deletes 2D/3D polyline vertex by picking (VLX Lisp for AutoCAD) 19kB 11.10.2019
V1.5
   
Go to file Animated line drawing in AutoCAD (LSP, CS+) External 23kB 12.3.2024    
Go to file Arc2Lin - converts Arc and Cirle entities into line segments (VLX for AutoCAD 2000x) 13kB 26.5.2003
V1.0
   
Go to file ASCPOINT.LSP - imports a coordinate text file into AutoCAD points, polylines or block copies (T.Tanzillo+CADstudio) 12kB 21.1.2020    
Go to file BreakAll + BreakObjects V2.x - breaks lines at intersections (automatic Break at intersection points) LSP by C.A.Butler - theSwamp.org 12308 5.1.2009    
Go to file BreakPls - breaks selected polylines at point objects (VLS Lisp for AutoCAD) 14kB 7.4.2020
V1.1
   
Go to file BufZone - create Buffer or Wipeout zones around line objects (VLX LISP for AutoCAD) 19kB 4.3.2020
V1.1
More information  
Go to file CADexcel - MS Excel plugin for importing XY/XYZ coordinate from Excel to AutoCAD (LT) points, polylines or blocks (also part of CS LT Extension) 894kB 27.4.2023 More information  
Go to file CADstudio FDO LineStyle 2010-2012 - generates line style symbols for FDO layers (AutoCAD Map, MapGuide) from drawing objects 2.6MB 2.3.2013 More information  
Go to file CADstudio FDO LineStyle 2013 - generates line style symbols for FDO layers (AutoCAD Map, MapGuide) from drawing objects 2.5MB 2.4.2013 More information  
Go to file CADstudio FDO LineStyle 2014 - generates line style symbols for FDO layers (AutoCAD Map, MapGuide) from drawing objects 2.5MB 2.4.2013 More information  
Go to file CAMLINE.LSP - creates a 3D view vector between source and target points of a given AutoCAD camera 466 27.2.2007    
Go to file Catenary curve (spline; cable sag line) generator (LSP LISP for AutoCAD, by G.Chanteau) 5kB 18.7.2022    
Go to file Centroid - draw center of gravity (CG/COG) point of polylines, regions and 3D solids, incl. volumes (VLX Lisp for AutoCAD) 16.8kB 3.4.2020
V1.1
More information  
Go to file CityGML - export simple polyline outlines from DWG to CityGML XML format (VLX Lisp for AutoCAD) 17kB 19.12.2012
V1.1
   
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 ConvertUnits - online physical units conversion palette in AutoCAD 2025-2015 (VLX LISP for AutoCAD and LT) 15kB 11.4.2024 More information  
Go to file COT - Convert old table - converts lines, texts and blocks to AutoCAD TABLE objects (by J.Villarreal) 30kB 29.12.2020
V1.7
More information  
Go to file CS LT Extension V1.22 - set of productivity tools for AutoCAD LT - line lengths, block report, text export... (CS+ bonus app) External 808kB 16.4.2021
V1.22
More information Buy
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 CurveText - draw text along a curve (arc, circle, polyline...), AutoCAD LSP by A.Gumula 14.3kB 5.7.2006 Description  
Go to file DGNspline2poly - convert DGN-imported spline to 2D/3D polyline with same vertices (VLX, CS+) External 13.8kB 5.12.2018
V1.0
   
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 DrGrid - draw 2D or 3D or polar grid lines, optionally numbered (VLX Lisp for AutoCAD) 25kB 17.2.2024
V1.5
More information  
Go to file DTM - free Digital Terrain Model application for AutoCAD - TIN, volume, elevations, flowlines, meshes (VLX for AutoCAD and Map 3D) 47kB 19.10.2021
V1.5
More information  
Go to file DynLTscale (DLTS) - scale linetypes dynamically by mouse dragging (VLX LISP for AutoCAD) 13kB 21.4.2016
V1.0
   
Go to file DynReset - restores missing grips on dynamic blocks (VLX for AutoCAD) 8683 1.12.2008
V1.0
Description  
Go to file FieldLink - draw temporary lines between fields and their source objects, incl. tables (VLX for AutoCAD) 13kB 3.10.2023
V1.7
   
Go to file FilterLL - filter LINEs by length (LSP for AutoCAD) 701 16.11.2010    
Go to file FixArea13 - fix polylines with overlapping segments for Area calculations in AutoCAD 2013 (VLX LISP for AutoCAD) 13kB 6.4.2013    
Go to file FPoly - draw fixed-length polyline with options (VLX LISP for AutoCAD) 18kB 1.3.2023
V1.1
   
Go to file Gaps - mark gaps, loose ends on lines in a DWG (VLX LISP for AutoCAD 15kB 7.9.2019
V1.0
More information  
Go to file GETCNAME - displays an AutoCAD command name in English, German, Czech, French, Spanish, Italian, Portuguese, Polish, Hungarian (VLX/LSP) 1820 18.8.2023 Description  
Go to file Hatch2L - hatch area between two boundary polylines (VLX LISP for AutoCAD) 17kB 4.1.2017
V1.0
   
Go to file HltNode - highlight polyline nodes temporarily (VLX LISP for AutoCAD) 14kB 25.11.2015
V1.0
   
Go to file INTLINES - draws points in all intersections of selected objects, lines, incl. self-intersections (cdnc5-02.LSP by B.Kramer) 4749 10.1.2014    
Go to file KLOT - Clothoide curve - arc to line (LSP for AutoCAD) 3231 16.2.2014    
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 LinCatalog - draws a catalog of complex linetypes defined in a .LIN file or in the DWG (free AutoLISP utility) 21kB 13.8.2013
V1.2
   
Go to file LineIntArc (LIA) - bridge line intersections (conductors) with an arc (VLX LISP for AutoCAD) 13836 11.3.2015
V1.1
   
Go to file LinExp - explode linetypes, both dashed and complex (modified TxtExp Express Tool) 10kB 21.7.2009    
Go to file LinOut - exports linetype definitions (incl. shape+text info) from an AutoCAD DWG drawing back to .LIN file 17kB 6.8.2023
V1.3
Description  
Go to file LLtype - change linetype of "bylayer" objects to the linetype of their layer; opposite to SetByLayer (LSP for AutoCAD) 964 24.1.2012    
Go to file LTFly - automatically generate AutoCAD complex linetypes (with embedded text) on the fly (VLX LISP) 20.5kB 1.5.2023
V1.6
   
Go to file LTspiral.xlsx - example of 2D spiral calculated in Excel, XY polyline ready to paste into AutoCAD LT 15519 9.3.2015 More information  
Go to file Overlaps - finds any overlaps/intersections in a DWG file - texts, lines... (VLX LISP for AutoCAD) 19kB 12.1.2024
V1.0
   
Go to file Parabola - true spline parabola, two methods (LSP LISP for AutoCAD) 19kB 22.4.2022    
Go to file PkLength - export picked line lengths from DWG to Excel (VLX LISP for AutoCAD) 33kB 21.9.2023
V1.4
   
Go to file PL2ML - convert polylines (LWPOLYLINE) to multilines (MLINE) - LISP/VLX 1508 11.5.2007    
Go to file PLDiet (PLD) - simplify LWpolylines, reduce number of vertices, weed (by B.Hailey, CAB, K.Cooper; LSP for AutoCAD) 9825 3.9.2018    
Go to file PLV - polyline vertices select - use 'PLV to specify a mask by picking (LISP for AutoCAD) 544 8.1.2010    
Go to file Pol2Cir - convert circular polylines and donuts to circles (VLX LISP for AutoCAD) 15kB 6.3.2016
V1.0
   
Go to file POLYVERT - list coordinates of polyline vertices (LSP for AutoCAD) 1321 7.6.2018    
Go to file PropByLayer (former LColor) and PropByObject - change "bylayer" properties of selected objects to the color, linetype, lineweight and transparency of their layer, or set layer properties by 1st object; opposite to SetByLayer (LSP for AutoCAD) 17kB 16.8.2022
V1.1
More information  
Go to file PtOutline - convex outline (hull) of selected 2D/3D points (VLX Lisp for AutoCAD) 13520 25.3.2015
V1.0
   
Go to file PurgeSmall - delete small elements (lines, polys, arcs, texts, blocks) from a DWG drawing file (VLX LISP for AutoCAD) 16kB 11.2.2021
V1.2
More information  
Go to file Region2Poly - convert 2D regions to polylines (VLX Lisp for AutoCAD) 12.6kB 1.3.2017
V1.1
   
Go to file RenameCSV - rename layouts, blocks, layers, linetypes, styles, groups, etc. using Excel/CSV table (VLX Lisp for AutoCAD) 20kB 15.5.2022
V1.1
More information  
Go to file RRename - rename layouts, blocks, layers, linetypes, styles, groups, etc. using regular expressions (VLX Lisp for AutoCAD and Civil) 14kB 15.12.2021
V1.5
   
Go to file RvrsLine - reverse direction of LINEs and POLYLINEs (LSP for AutoCAD) 3567 16.3.2008    
Go to file SelfIntersect - check for self-intersections, duplicate and zig-zag/retracing vertices in polylines (VLX LISP for AutoCAD) 15.5kB 30.5.2016
V1.4
More information  
Go to file SlopeTick - draw slope tickmarks (batter lines, hatches) between two polylines 15kB 8.10.2011
V1.4
   
Go to file Sp2Pl - converts selected splines to polylines (VLX Lisp for AutoCAD 2011+) 12kB 24.2.2012    
Go to file SplineUnfold - unfold 3D spline to 2D curve (LSP for AutoCAD) 1561 8.11.2021    
Go to file srxTEXT - search and replace AutoCAD drawing texts using regular expressions, supports batch scripts, table replacements, numeric intervals (trial) 26kB 27.11.2023
V2.2
Description Buy
Go to file SVG Export for Inventor - exports unfolded sheetmetal outlines to SVG file, iLogic (CS+ utility) External 9kB 20.10.2017    
Go to file ToMulti - convert polylines to multi-lines by definitions in the .Tab file (VLX LISP for AutoCAD) 13kB 16.12.2019
V1.3
More information  
Go to file Triangle - construct triangular polylines defined by sides and angles, optional labels (VLX for AutoCAD) 17kB 1.6.2020
V1.2
   
Go to file TrimArr - trim dynamic array to polyline border, non-destructive (VLX LISP for AutoCAD) 26kB 31.5.2021
V1.0
   
Go to file Twitter for AutoCAD - send tweets (statuses) directly from AutoCAD command line (VLX Lisp) - no longer supported - see ACADtweet 3239 28.8.2009    
Go to file VerticesBlk, EndBlk - insert block at each line or polyline vertex (also 3D; and optionally in arc midpoints, or only in endpoints) 16kB 16.7.2018
V1.6
   
Go to file VTXdist - add polyline vertices in intervals (divide/measure), VLX Lisp for AutoCAD 2.3kB 18.1.2022    
Go to file WPS - select objects inside a picked polyline or circle (LISP, AutoCAD) 1142 8.6.2015    
Go to file xCurve - export XY vertices from curves, one curve per line (VLX for AutoCAD) 13kB 15.12.2010
V1.0
   
Fusion360
Go to file ImportSplineCSVg/ImportSplineCSVm/ImportPointsCSV - import XY(Z) points from Excel to spline or points in Fusion 360 (Script) 8kB 8.10.2016 More information  
Inventor
Go to file ImportCoord - reads Excel coordinates into Inventor as sketch splines, 3D splines or named 3D workpoints (Inventor 5/6/7/8/9/10/20xx, VBA by CAD Studio) 158kB 17.4.2014
V1.5
More information  
Revit
Go to file Holixa T4R (Revit Tools) 2024/2023/2022/2021 (trial/update) - bonus nástroje CS+ pro Autodesk Revit, vč. JobTime, BIMsign, patra, kóty, výkazy, filtry, prostupy, příkaz. řádek, potrubí, izolace, kdo změnil... (zdarma pro zákazníky, CZ/EN/FR/PL) External 84MB 19.9.2023
V4.0.1
Description Buy
Other Goodies
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Go to file Additional .LIN linetypes for AutoCAD and LT, complex linetypes (linetype library; CZ typy čar, čiary) - UPD, STN, ZMZ, geo, map, ... FIXED (.LIN+.SHX) 115kB 1.12.2016    
Go to file ARIAL alternative - ROMANM2.SHX font based on RomanD outline font (by T.Irwin) 53kB 6.9.2005    
Go to file ARIAL.SHX - shx version of the Arial font (outline) 8.9kB 22.7.2005    
Go to file CISTEXT command - clean text from overlapping lines    
Go to file DIN-1451 fonts, Mittelschrift, Engschrift - roadsign outline font - Germany, Hungary, Israel, Romania, Estonia, Vietnam... (SHX+TTF) 153kB 28.3.2020    
Go to file DLINE command - double line for AutoCAD, incl. arcs (LSP) 16kB 5.10.2000    
Go to file IRREG command - draw irregular lines    
Go to file ISO-LIN - metrické typy čar ISO/ČSN 1:1 pro AutoCAD a LT, komplexní typy čar dle ČSN 01 3411 - linetype library .LIN (Ivo Klepárník) 912kB 21.10.2016    
Go to file KILLDOTS command - clean null lines, arcs and 'space' (whitespace only) text (R12-2005) 1.1kB 2.6.2004    
Go to file LP_Linetypes - complex linetypes for AutoCAD and LT (.LIN+.SHX, by Lineplan knihovna/typy čar/library)) 33kB 15.8.2008    
Go to file Lynn Allen: Tipy & Triky pro AutoCAD 2012 (PDF příručka, anglicky) External 4.4MB 11.5.2011    
Go to file Výuka Inventoru (Inventor tutorial - CZ) off-line External 22MB 1.8.2001 More information  

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.