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Autodesk - free
Viewers
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Go to file Firefox add-on for Autodesk Design Review (view DWF in Firefox/Mozilla browser) External 296kB 19.11.2010 More information  
 
Patches + updates
CAD Utilities and add-ins
Go to file DXFIN - read DXF into an open R14 drawing 3kB    
 
Free applications and CAD utilities (mostly our freeware & trials)
Go to file 3Dintcurves - find intersections between lines and 3D solids (VLX LISP for AutoCAD) 15kB 5.10.2021
V1.0
   
Go to file BLKREDEF.LSP - redefines a drawing block with an updated version from a DWG file (can be batch scripted) 1722 23.6.2017    
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 CopyBlockE - copy/redefine block from another drawing (VLX LISP for AutoCAD) 20kB 20.9.2023
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 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 DOBT - set draworder by object type and by layer (VLX for AutoCAD) 15kB 9.5.2021
V1.3
Description  
Go to file FindFont - find all DWG texts using a specific font (VLX LISP for AutoCAD) 17kB 24.5.2022
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 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 najdiDiry - find holes - iLogic macro, bulk-selects all holes in a solid body (for Inventor) 1272 16.12.2021    
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 PatCatalog - draws a catalog of hatch patterns defined in all .PAT files (VLX LISP for AutoCAD) 16kB 4.5.2017
V1.1
   
Go to file PatOut - export hatch pattern definition back to a .PAT file (VLX Lisp for AutoCAD) 13kB 12.4.2016
V1.2
   
Go to file rVPscale reactor automatically displays viewport (mview) scale in a predefined text entity 2.8kB 21.4.2003    
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 SPath - find shortest path between two points on a network (VLX Lisp for AutoCAD) 17kB 30.6.2015
V1.0
   
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 SysVarLock - protects (watches) defined AutoCAD system variables from assigning defined values 12kB 22.7.2011
V1.2
   
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 TxtOverlap - find, mark and traverse overlapped texts in the drawing (VLX Lisp for AutoCAD) 12kB 23.9.2013
V1.0
   
Go to file Undef2 - undefine (deny) specified AutoCAD commands, list stored in Registry (VLX LISP for AutoCAD) 15kB 23.2.2016
V1.0
   
Revit
Go to file FindReplace - text replace utility for Revit 2008 (EN+CZ, WATG) 8.9kB 14.5.2007    
Go to file FindReplace - text replace utility for Revit 2010 (EN+CZ, WATG) 12kB 18.4.2009    
Go to file FindReplace - text replace utility for Revit 8.1 (EN+CZ) 8.8kB 12.12.2005    
Go to file FindReplace - text replace utility for Revit 9 (EN+CZ, WATG) 8.4kB 24.5.2006    
Other Goodies
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Go to file ACAD.SXP definition file for StrokeIt - gesture control for AutoCAD and other applications (see CAD Forum Tips for more information) 588 9.5.2003    
Go to file ACAD.SXP definition file for StrokeIt - gesture control for AutoCAD and other applications by J.Remeš (see CAD Forum Tips for more information) 241.9kB 21.6.2005    
Go to file BL0 and BL00 command - redefines blocks to layer 0 (e.g. for recolor) 1kB 8.6.2007    
Go to file FIXBLOCK redefines blocks to layer 0, color byblock, ltscale 1.0 entities (by Manusoft) 1030 19.1.2018    

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.