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Autodesk - free
Object Enablers
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Go to file Bentley AutoPLANT Object Enabler V8i for AutoCAD, 64-bit External 20MB 1.7.2017    
2002
Go to file Mechanical/Electrical 1 Object Enabler for 2002 family+Volo (Building systems 3 runtime, needs ADT OE) External 2MB 5.1.2002    
2009
Go to file Civil 3D Object Enabler 2009 for AutoCAD 2009, Map 3D 2009, Architecture 2009, Mechanical 2009, Electrical 2009, MEP 2009, Navisworks 2009, 3ds max 2009, Impression 2009 (Civil 3D 2009 runtime), 32-bit External 22MB 10.4.2009 More information  
2010
Go to file Civil 3D Object Enabler 2010 for AutoCAD 2010, Map 3D 2010, Architecture 2010, Mechanical 2010, Electrical 2010, MEP 2010, Navisworks 2010, 3ds max 2010 (Civil 3D 2010 runtime), 32-bit External 26MB 9.4.2009 More information  
2011
Go to file Civil 3D Object Enabler 2011 for AutoCAD 2011, Map 3D 2011, Architecture 2011, Mechanical 2011, Electrical 2011, MEP 2011, Navisworks 2011, 3ds Max 2011 (Civil 3D 2011 runtime), 32-bit External 151MB 7.10.2010 More information  
Go to file Civil 3D Object Enabler 2011 for AutoCAD 2011, Map 3D 2011, Architecture 2011, Mechanical 2011, Electrical 2011, MEP 2011, Navisworks 2011, 3ds Max 2011 (Civil 3D 2011 runtime), 64-bit External 159MB 7.10.2010 More information  
2012
Go to file Civil 3D Object Enabler 2012 for AutoCAD 2012, Map 3D 2012, Architecture 2012, Mechanical 2012, Electrical 2012, MEP 2012, Navisworks 2012, 3ds Max 2012 (Civil 3D 2012 runtime), 32-bit External 154.5MB 17.6.2011 More information  
Go to file Civil 3D Object Enabler 2012 for AutoCAD 2012, Map 3D 2012, Architecture 2012, Mechanical 2012, Electrical 2012, MEP 2012, Navisworks 2012, 3ds Max 2012 (Civil 3D 2012 runtime), 64-bit External 162MB 17.6.2011    
2013
Go to file Civil 3D Object Enabler 2013 for AutoCAD 2013, Map 3D 2013, Architecture 2013, Mechanical 2013, Electrical 2013, MEP 2013, Navisworks 2013, 3ds Max 2013 (Civil 3D 2013 runtime), 32-bit External 157MB 14.4.2012    
Go to file Civil 3D Object Enabler 2013 for AutoCAD 2013, Map 3D 2013, Architecture 2013, Mechanical 2013, Electrical 2013, MEP 2013, Navisworks 2013, 3ds Max 2013 (Civil 3D 2013 runtime), 64-bit External 165MB 14.4.2012    
TRIAL versions
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Go to file TRIAL - Autodesk AutoCAD Electrical 2021 EN, Win 64-bit External 6GB 25.3.2020 More information Buy
 
Patches + updates
AutoCAD
R2015
Go to file AutoCAD 2015 .NET Installation Hotfix (for ACAD 2015 family and Electrical 2016) External 700MB 21.7.2016 More information  
Mechanical, Electrical, ecscad, MDT
ACAD2013
Go to file AutoCAD Electrical 2013 Service Pack 2, 32-bit (incl.SP1; EN/DE...) External 36MB 28.5.2013 More information  
ACADE2005
Go to file AutoCAD Electrical 2005 SP1 patch - locked (EN/FR/IT...) External 3.13MB 20.1.2005 More information  
ACADE2008
Go to file AutoCAD Electrical 2008 Service Pack 1, 32-bit (EN/DE...) External 11MB 19.9.2007 More information  
Go to file AutoCAD Electrical 2008 Service Pack 2, 32-bit (EN/DE...) External 11.2MB 14.6.2008 More information  
ACADE2009
Go to file AutoCAD Electrical 2009 Update 1 (Service Pack 1), 32-bit (EN/DE...) External 19.4MB 31.7.2008 More information  
Go to file AutoCAD Electrical 2009 Update 2 (Service Pack 2), 32-bit, contains SP1 (EN/DE...) External 26.5MB 18.10.2008 More information  
Go to file AutoCAD Electrical 2009 Update 3 (Service Pack 3), 32-bit, contains SP1/SP2 (EN/DE...) External 33MB 29.5.2009 More information  
ACADE2010
Go to file AutoCAD Electrical 2010 Update 1 (Service Pack 1), 32-bit (EN/DE...) External 21.3MB 25.8.2009 More information  
ACADE2011
Go to file AutoCAD Electrical 2011 Update 1 (Service Pack 1), 32-bit (EN/DE...) External 12MB 21.9.2010 More information  
Go to file AutoCAD Electrical 2011 Update 1 (Service Pack 1), 64-bit (EN/DE...) External 17MB 21.9.2010 More information  
ACADE2012
Go to file AutoCAD Electrical 2012 Service Pack 1, 32-bit (EN/DE...) External 11.8MB 20.9.2011 More information  
Go to file AutoCAD Electrical 2012 Service Pack 1, 64-bit (EN/DE...) External 16.5MB 20.9.2011    
ACADE2013
Go to file AutoCAD Electrical 2013 Service Pack 1, 32-bit (EN/DE...) External 23MB 24.9.2012 More information  
Go to file AutoCAD Electrical 2013 Service Pack 1, 64-bit (EN/DE...) External 29.5MB 24.9.2012    
Go to file AutoCAD Electrical 2013 Service Pack 2, 64-bit (incl.SP1; EN/DE...) External 45MB 28.5.2013    
ACADE2014
Go to file AutoCAD Electrical 2014 Service Pack 1.1, 32-bit (EN/DE...) External 33MB 10.10.2013 More information  
Go to file AutoCAD Electrical 2014 Service Pack 1.1, 64-bit (EN/DE...) External 43MB 10.10.2013    
ACADE2015
Go to file AutoCAD Electrical 2015 Service Pack 1, 32-bit (EN/DE...) External 17MB 20.6.2014 More information  
Go to file AutoCAD Electrical 2015 Service Pack 1, 64-bit (EN/DE...) External 21.5MB 20.6.2014 More information  
Go to file AutoCAD Electrical 2015 Service Pack 2, 32-bit (incl.SP1; EN/DE...) External 25MB 1.10.2014 More information  
Go to file AutoCAD Electrical 2015 Service Pack 2, 64-bit (incl.SP1; EN/DE...) External 32MB 1.10.2014 More information  
ACADE2016
Go to file AutoCAD Electrical 2016 Service Pack 1, 32-bit (EN/DE...) External 2.5MB 12.10.2015 More information  
Go to file AutoCAD Electrical 2016 Service Pack 1, 64-bit (EN/DE...) External 3MB 12.10.2015 More information  
ACADE2017
Go to file AutoCAD Electrical 2017 Service Pack 1, 64-bit (EN/DE...) External 1.4MB 29.7.2016 More information  
 
Free applications and CAD utilities (mostly our freeware & trials)
CAD Studio Shareware (trial)
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Go to file PreSave reactor - perform selected actions before any Save operation (zoom, layer, purge, preview, saveAs, author, AcadVer...) - VLX for AutoCAD (CS+) 20kB 16.1.2016
V1.5
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 AddMe - sums values of numbers in all selected drawing texts (LSP for AutoCAD) 314 18.11.2017    
Go to file AttAdd and AttApp - adds/subtracts a number or appends a prefix/suffix to the specified attribute in selected blocks (VLX Lisp for AutoCAD) 11kB 14.12.2011
V1.1
   
Go to file BBox - draws permanent or temporary bounding boxes (rectangle, circle, or 3D box) for selected drawing objects 14kB 8.3.2011
V1.1
   
Go to file Blikej - blinks the layer of the selected entity 740 15.12.2009    
Go to file BlkAnnot - change the Annotative flag for selected blocks (VLX Lisp for AutoCAD) 14kB 26.2.2013
V1.1
   
Go to file BreakPls - breaks selected polylines at point objects (VLS Lisp for AutoCAD) 14kB 7.4.2020
V1.1
   
Go to file BRename - rename selected block (LSP for AutoCAD) 1326 25.5.2020    
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 CenOf - get center point (XYZ) of selected objects (LSP for AutoCAD) 2147 21.10.2019    
Go to file COPY2LAY - copies selected objects to all specified layouts (VLX for AutoCAD) 12.5kB 17.9.2012
V1.1
   
Go to file CopyLay - copies selected layers (definitions) from another DWG file (VLX for AutoCAD) 14kB 25.10.2009
V1.0
   
Go to file CopyPageSetups - copy current page setups to all DWG files in the selected folder (VLX LISP for AutoCAD) 13.6kB 29.8.2012
V1.0
   
Go to file CSreportAtt - extracts selected block attributes or DWG properties to a TXT file, e.g. for ScriptPro (CS+) External 14kB 30.1.2014
V1.0
   
Go to file DBXremSL, DBXscanSL - scans DWG files, reports and removes excessive annotation scale lists in all drawings in selected folder (VLX/DBX) 17.4kB 6.1.2016
V1.4
More information  
Go to file DBXremVBA, DBXscanVBA - scans DWG files, reports and removes VBA macros in all drawings in selected folder (VLX/DBX) 25kB 15.12.2010
V1.3
More information  
Go to file DelInLo - delete selected objects in all layouts (LSP for AutoCAD) 386 16.4.2019    
Go to file DGNconvert - batch convert selected DGN files to DWG (VLX Lisp for AutoCAD; CS+ bonus) External 26kB 10.11.2015
V1.2
   
Go to file DimMask - adds text mask with specified color and offset to selected dimensions (VLX Lisp for AutoCAD) 1724 18.5.2011
V1.1
   
Go to file DUP - make a duplicate copy of selected objects, also repeatedly (VLX LISP for AutoCAD) 12560 22.6.2016
V1.0
   
Go to file DynFrame - frames selected text with dynamic frame and offset (mleader) 14kB 9.8.2013
V1.2
   
Go to file Ent2Lay - converts selected entities to individual layers (VLX for AutoCAD) 11728 26.1.2009
V1.1
   
Go to file FaceArea - total surface area of selected 3DFACEs (LSP for AutoCAD) 1016 10.12.2013    
Go to file fAREA - creates a dynamic area label (acreage of the selected object/s), or length label (perimeter, fLENGTH), or property label (fPROP) - VLX LISP for AutoCAD 15kB 30.10.2017
V1.16
   
Go to file FLay - automatic force layer for selected commands (drawing objects), AutoCAD LISP reactor (VLX) 126kB 29.1.2020
V2.2
Description  
Go to file FlipDimArrow2 - flip arrows (inside/outside) for selected dimensions (VLX Lisp for AutoCAD) 12kB 1.12.2013    
Go to file FlipFace - flip selected 3DFaces (reverse normals) - LSP for AutoCAD 1197 30.1.2013    
Go to file fVolume - creates a dynamic volume label (volume of the selected object) 1432 28.1.2007    
Go to file GetCol - show real color of the selected object, incl. bylayer and block-nested (VLX Lisp for AutoCAD) 12kB 3.8.2011
V1.1
   
Go to file HidePStyle - hides objects with selected plot style (VLX Lisp for AutoCAD) 14kB 14.4.2016
V1.1
   
Go to file HideShow - hide selected objects from AutoCAD drawing (VLX for AutoCAD) 1500 26.5.2008    
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 LabelArcs - label all selected arcs with radius and arclength (LSP for AutoCAD) 1515 23.9.2019    
Go to file LayLay reactor - switches selected layers on/off when entering Model and Paperspace DWG layouts 10kB 23.11.2008
V1.0
   
Go to file LAYNSEL - move selected objects to a picked (sub)object's layer (LSP for AutoCAD) 13kB 16.10.2012
V1.1
   
Go to file MakeMore (Kent Cooper) - create similar drawing object as the selected one (LSP for AutoCAD) 31kB 16.5.2016    
Go to file MatchSel (reverse MatchProp) - select an entity and set current its color, layer, ltype - for new entities (LISP for AutoCAD) 725 13.1.2009    
Go to file MinOf - select only the minimum/maximum object - shortest, largest, highest (VLX LISP for AutoCAD) 16kB 8.1.2019
V1.1
More information  
Go to file NCOPY0 - a modified Express Tool - make a copy of a selected nested entity from a block or xref 2983 15.12.2009    
Go to file PaintSelect - select objects by painting, new object selection method (VLX LISP for AutoCAD) 16kB 19.10.2018
V1.0
More information  
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 PropByLayer (former LColor) - change "bylayer" properties of selected objects to the color, linetype, lineweight and transparency of their layer; opposite to SetByLayer (LSP for AutoCAD) 2082 21.6.2019 More information  
Go to file PSfixTxt - prefix or suffix selected drawing texts (LSP for AutoCAD) 557 27.6.2011    
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 ReLinkField (RLF) - re-link dynamic text field to a selected source object (VLX LISP for AutoCAD) 15kB 28.7.2020
V1.0
   
Go to file RIblock - replace selected instances of a block (or blocks) with another block, sync attributes, dyn.parameters (VLX Lisp for AutoCAD) 28kB 25.5.2017
V1.4
   
Go to file Rotate.dyn - simple Dynamo script, rotate selected RFA families - "sunflower" 5.9kB 2.6.2020    
Go to file RotX - rotates selected objects relatively around individual insertion points (LSP by Martin Bielina) 1149 9.4.2009    
Go to file ScaleXYZ - scales selected objects independently in the X-Y-Z axis (VLX Lisp for AutoCAD) 13kB 30.11.2010
V1.0
   
Go to file Scatter - move/rotate/scale/recolor selected objects randomly in 2D or 3D or curves - orchard, parking, crowd, vertices... (VLX Lisp for AutoCAD) 23kB 12.4.2020
V1.9
More information  
Go to file Sel2BlkRef - auto-replace selected/similar objects with block references (VLX LISP for AutoCAD) 15kB 17.10.2018
V1.0
More information  
Go to file Sel3Dsol - select/filter 3D solids by their height, volume, surface area or slenderness (VLX LISP for AutoCAD) 14kB 4.12.2017
V1.1
   
Go to file Sel3Face - select trilateral or degenerated 3DFaces in drawing (LSP for AutoCAD) 1955 6.3.2015    
Go to file SELBLK.LSP - select all blocks of the same name as the picked block or by wildcards 1310 2.9.2012    
Go to file SelByAnnoScale - select objects by their assigned annotation scales (LSP for AutoCAD) 1156 12.12.2017    
Go to file SelDB - select dynamic blocks by dynamic properties (VLX Lisp for AutoCAD) 17kB 18.3.2020
V1.3
   
Go to file SelFace - select trilateral, quadrilateral, degenerated, singular, horizontal or ccw 3DFaces in drawing (VLX Lisp for AutoCAD) 14kB 7.3.2015
V1.1
   
Go to file SelHatch0 - selects damaged hatches with null areas (VLX Lisp for AutoCAD) 12kB 15.4.2011
V1.1
   
Go to file SELLAY.LSP - select all entities in the same layer(s) as the picked entity 956 2.10.2009    
Go to file SelSim - select similar objects (type+layer), across layouts (LSP for AutoCAD, by A.Wuellner, M.Perry) 1476 22.9.2014    
Go to file SetACIcolor - convert truecolor to ACI color in selected objects and blocks (VLX LISP for AutoCAD) 15kB 22.4.2019
V1.1
   
Go to file SMove - stretched move, proportionally stretch ref.points of selected objects (VLX Lisp for AutoCAD) 18kB 31.8.2015
V1.0
   
Go to file SolSimilar - select all geometrically similar 3D Solids or Regions in a DWG (VLX LISP for AutoCAD) 16kB 25.10.2018
V1.1
More information  
Go to file Sp2Pl - converts selected splines to polylines (VLX Lisp for AutoCAD 2011+) 12kB 24.2.2012    
Go to file srxTEXT - search and replace AutoCAD drawing texts using regular expressions, supports batch scripts, table replacements, numeric intervals (trial) 25kB 7.3.2018
V2.1
Description Buy
Go to file SSX - modified Express Tool "SSX" - select objects across layouts, incl.texts, copy to Express folder (LSP for AutoCAD) 8860 8.4.2019    
Go to file SumaPloch - summarizes areas of selected objects, adds area label (VLX Lisp for AutoCAD) 12kB 1.10.2010
V1.1
Description  
Go to file Syn - synchronize block attributes, keep selected properties (V1.41c, by Patrick_35) 12kB 20.2.2019    
Go to file TabReStyle - resets cell style in selected table objects (VLX Lisp for AutoCAD) 12kB 14.6.2011
V1.0
   
Go to file TextHalo - add a color/bkg halo to selected texts (halotext, LSP for AutoCAD) 12kB 12.12.2018    
Go to file Txt2XLS - export selected drawing texts to Excel (VLX Lisp for AutoCAD) 15kB 23.6.2016
V1.1
   
Go to file WPS - select objects inside a picked polyline or circle (LISP, AutoCAD) 1142 8.6.2015    
Go to file SelectionInfo - non-modal iProperties palette - Inventor add-on (on GitHub, incl. C# source code) External 30kB 13.12.2019 More information  

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

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