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Autodesk - free
Viewers
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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 Express Viewer 3.1 v češtině (CZ) - rychlý prohlížeč DWF (vč. DWF 6, tisk v měřítku, relativní hyperodkazy, atd.) -- zastaralý, použijte Design Review External 2.32MB 28.8.2003 More information  
Tools (standalone, Autodesk)
Go to file Autodesk Maya PLE 8.5 (Personal Learning Edition) - free for non-commercial use (Windows or Mac OS X) External 240MB 25.6.2007 More information  
Revit
Go to file Autodesk Revit PDF Writer 4.2 tool (HyperXpress, Windows driver) currently not available External 6MB 30.4.2003    
 
Patches + updates
AutoCAD
R2011
Go to file nVidia Performance Driver (accelerator) for AutoCAD 2011, 2010, 2009 and 3ds Max 2011, 2010, 2009 - 32/64-bit (Ver. 18.1.6) External 4MB 5.2.2011    
R2023
Go to file Inventor Interoperability 2023 (Inventor Server) - model view for AutoCAD 2023 External 756MB 3.4.2024 More information  
R2024
Go to file Inventor Interoperability 2024 (Inventor Server) - model view for AutoCAD 2024 External 1.3GB 10.4.2024 More information  
R2025
Go to file Inventor Interoperability 2025 (Inventor Server) - model view for AutoCAD 2025 External 1.6GB 26.3.2024    
Map, Civil 3D, Raster, InfraWorks, Vehicle
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Go to file AutoCAD Civil 3D performance repair patch (for C3D 2014-2017) External 4.8MB 11.11.2016 More information  
Inventor, HSM/CAM, Fusion 360, Factory, Alias
Go to file Revit Interoperability 2024 (for Inventor 2024) External 2GB 29.3.2023    
Go to file Revit Interoperability 2025 (for Inventor 2025) External 3GB 28.3.2024    
Go to file Slicer for Fusion 360 - slicing 3D models for cardboard or paper External 80MB 12.4.2020
V1.0.1
More information  
Inventor2018
Go to file Autodesk Inventor HSM 2018 - latest experimental build 5.2.1.48 (unsupported), Win64 External 428MB 8.8.2017 More information  
Inventor7
Go to file Autodesk Inventor R7 SP1 IDW Open Performance Enhancement (post-SP1 fix for AI7+AIP7) External 2.54MB 24.9.2003 More information  
3ds Max, Maya, Mudbox, MotionBuilder, VRED
Maya2015
Go to file Subscription Extension 1 for Maya 2015 - Color management, Performance profiler, Workflow (subscription only) External 322MB 10.9.2014 More information  
Revit, Robot, Steel
Revit2013
Go to file Revit Extensions (Q3 update) - 2013 (subscription only) - structural analysis, modeling, reinforcement, interoperability and construction documentation, SDNF... (EN) External 54MB 22.10.2012    
Revit2016
Go to file Classification Manager for Revit 2016 (BIM classification systems) External 3.9MB 1.11.2015    
Go to file CoBIE Extension for Revit 2016 (free) External 3.2MB 20.2.2016 More information  
Revit2017
Go to file Classification Manager for Revit 2017 (BIM classification systems) External 3.9MB 18.5.2016    
Go to file CoBIE Extension for Revit 2017 (free) External 3.2MB 18.5.2016    
Go to file Insight 360 plug-in for Revit 2017 (building performance, energy analysis) External 38MB 7.1.2017    
Revit2018
Go to file Classification Manager for Revit 2018 (BIM classification systems) External 3.9MB 18.7.2017    
Go to file COBie Extension for Revit 2018 (free) External 3.5MB 14.9.2017    
Go to file Enhanced DWG Exporter for Revit 2018 (free) External 83MB 5.11.2018    
Go to file Insight 360 plug-in for Revit 2018 (building performance, energy analysis) External 39MB 18.6.2017    
Revit2019
Go to file BIM Interoperability Tools for Revit 2019, V8.0.8046 - Classification Manager, COBie Extension, Model Checker (subscription) External 13MB 3.3.2022
V8.0.8046
   
Go to file Enhanced DWG Exporter for Revit 2019 (free) External 57MB 5.2.2019    
Revit2020
Go to file BIM Interoperability Tools for Revit 2020, V9.0.8326 - Classification Manager, COBie Extension, Model Checker (subscription) External 12MB 8.11.2022
V9.0.8326
   
Revit2021
Go to file BIM Interoperability Tools for Revit 2021, V9.1.8599 - Classification Manager, COBie Extension, Model Checker (subscription) External 14MB 10.8.2023
V9.1.8599
   
Revit2022
Go to file BIM Interoperability Tools for Revit 2022, V9.1.8599 - Classification Manager, COBie Extension, Model Checker (subscription) External 14MB 10.8.2023
V9.1.8599
   
Revit2023
Go to file BIM Interoperability Tools for Revit 2023, V9.1.8599 - Classification Manager, COBie Extension, Model Checker (subscription) External 14MB 10.8.2023
Vv9.1.8599
   
Revit2024
Go to file BIM Interoperability Tools for Revit 2024, v9.1.8599.0 - Classification Manager, COBie Extension, Model Checker (subscription) External 14MB 10.8.2023
Vv9.1.8599
   
Vault, ADMS
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Go to file Autodesk Productstream 2 DWF wrapper for Microsoft Business Solutions Great Plains 8 (update) External 816kB 24.1.2005    
Navisworks, Showcase, BIM 360
Go to file COBie Extension for Navisworks 2018, 2019 (free) External 36MB 13.2.2019    
Go to file Navisworks Manage 2015 - Revit interoperability security update (heartbleed) External 68MB 21.5.2014 More information  
Go to file Navisworks Simulate 2015 - Revit interoperability security update (heartbleed) External 68MB 21.5.2014 More information  
CAD Utilities and add-ins
Go to file mtEDITOR - simple replacement of AutoCAD MTEXT editor, now with customization, special characters, upper/lowercase; may need VB6 runtime (V.Seiner) 13kB 3.8.2004    
 
Free applications and CAD utilities (mostly our freeware & trials)
Revit Families
Go to file Material library (.adsklib+textures) for the BIM library PERITO (by BIMproject, see CADforum.cz) 111MB 11.6.2014 More information  
Our shareware (trial)
Go to file AutoClass - automatic classification of DWG objects properties to colors or layers (VLX for AutoCAD) 23kB 14.10.2022
V1.1
More information Buy
Go to file CADstudio XLSparam - export/import dyn.block+constraint parameters to Excel, link table cells with parameters and geom.properties of drawing objects, for AutoCAD 2021-2014 (trial/CS+) 61kB 16.11.2020
V1.1
More information Buy
Go to file DWGsign 1.1.14 (EN/CZ/FR) - watermark your DWG drawing with your permanent invisible signature (for AutoCAD 2020/2019/2018/2017/2016) External 1.3MB 10.6.2019
V1.1.14
More information Buy
Go to file LiveLabel 2007 reactor - dynamically link and label properties of AutoCAD objects (AutoCAD 2007, trial) 291kB 13.11.2006 More information Buy
Go to file LiveLabel reactor - dynamically link and label properties of AutoCAD objects (A2002, trial) 280kB 14.4.2002 More information Buy
Go to file PreSave reactor - perform selected actions before any Save operation (zoom, layer, purge, preview, saveAs, author, PC, AcadVer...) - VLX for AutoCAD (CS+) 23.5kB 16.1.2022
V1.6
More information Buy
Excellink
Go to file Excellink Helper Macros - free add-on functions for Excellink users (VBA) 2.8kB 7.5.2004 More information  
Games
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Go to file Mine Sweeper game for AutoCAD (miny) by J.P.Sanders 31kB 5.7.2004    
Go to file MineSweeper3D - free minesweeper game for Autodesk Inventor 2013/2012 32/64-bit 5.3MB 16.12.2012 More information  
CAD Utilities and add-ins
Go to file BBox - draws permanent or temporary bounding boxes (rectangle, circle, 3D box or cylinder) for selected drawing objects, supports UCS (VLX LISP) 18kB 31.10.2023
V1.2
   
Go to file Copy layer properties from one viewport to all other layouts/viewports (VLX LISP for AutoCAD) 14kB 25.1.2019
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 DblClick reactor opens hyperlinks attached to AutoCAD drawing objects just by double-click 2kB 8.4.2005    
Go to file DWGprop - DWG properties import/export, by Irné Barnard 3.7kB 8.6.2023    
Go to file DWGpropsCSV - batch import drawing properties from Excel (VLX LISP for AutoCAD) 13kB 8.6.2023
V1.0
   
Go to file EditCustomProperties - change order and edit DWG properties (LSP, by kruuger) 27kB 12.11.2020    
Go to file ExplodeIP (VLX) - explode and inherit properties (e.g. for exploding MPolygons) 1644 6.8.2007    
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 17kB 8.5.2023
V1.19
   
Go to file IncObj - incrementally number any DWG objects into hyperlinks (can be scheduled to EXTRDATA) 15kB 8.9.2014    
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 ListLinks - list all hyperlinks in the current drawing (LSP for AutoCAD) 703 26.8.2009    
Go to file LookupXLS - lookup DWG texts and attribute values from Excel XLS tables, replace/hyperlink (VLX for AutoCAD) 189kB 9.6.2023
V1.2
More information  
Go to file MakeMore (Kent Cooper) - create similar drawing object as the selected one (LSP for AutoCAD) 31kB 16.5.2016    
Go to file MatchLayP - copies layer properties to another layer (VLX Lisp for AutoCAD) 1552 20.8.2008    
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 ModDXF - generalized editor/lister of DWG-entity internal DXF-code properties (VLX LISP for AutoCAD) 48kB 6.12.2023
V1.4
   
Go to file MPROP - AutoCAD mass properties with material density (ARX for R14) 7kB 22.10.1998    
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 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 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 SelDB - select dynamic blocks by dynamic properties (VLX Lisp for AutoCAD) 18kB 21.5.2022
V1.3
   
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 SetByBlock - set object properties to ByBlock, incl. in blocks and arrays (VLX LISP for AutoCAD) 16kB 9.9.2023
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 Syn - synchronize block attributes, keep selected properties (V1.41c, by Patrick_35) 12kB 20.2.2019    
Go to file VojPer.LSP - vojenská perspektiva (military projection) - 3D proj. pro AutoCAD 2796 21.9.2007    
Go to file Wrapper - obalí výkresové objekty obalovou křivkou (LISP, VIP/CS+) External 17.8kB 9.6.2011
V1.1
   
Go to file xCurve - export XY vertices from curves, one curve per line (VLX for AutoCAD) 13kB 15.12.2010
V1.0
   
Inventor
Go to file Be.Smart T4I 2025/2024/2023/2022 (trial/update) - bonus nástroje CS+ pro Autodesk Inventor, vč. automatizace iProperties, BOM, QR Code, camera-sync, iLogic... (zdarma pro zákazníky, CZ/EN/FR/PL/ES/PT) External 7.8MB 10.4.2024
V26.3
More information Buy
Go to file FeatureRename - rename Inventor features by geometrical properties (Inventor 2010/2009, 32/64-bit), by Allen Gager 2.5MB 14.11.2009 More information  
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Go to file SelectionInfo - non-modal iProperties palette - Inventor add-on (on GitHub, incl. C# source code) External 30kB 13.12.2019 More information  
Other Goodies
Go to file ARCHS.SHX - architectural hand-drawn SHX font for AutoCAD (uppercase/lowercase) 4004 25.1.2008    
Go to file Bubble for AutoCAD v2.94 - dynamically displays drawing entity properties - in English, Spanish, French, German, Italian, Czech (R14, 2000/i/2002, 2004/2005/2006, 2007/2008/2009 + LT + ADT + Map) 10MB 19.5.2012 More information  
Go to file Cadalyst Benchmark Test C2019 - performance test for AutoCAD 2000-2019 External 8.3MB 5.9.2018 More information  
Go to file Dunn Edwards color book (perfect palette) for AutoCAD (ACB) External 92kB 2.5.2013    
Go to file GEOCAD.SHX - SHX font for AutoCAD (uppercase, label-script) 7kB 5.8.2014    
 
Additional files (Microsoft+HP)
HP
Go to file DesignJet printing costs calculator External 3.7MB 1.5.2005 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.