File extension	The full name of the file	Popularity
File extension 123	PCB123 Circuit Board Design
File extension 123C	Autodesk 123C Drawing
File extension 123D	Autodesk 123D Drawing
File extension 123DX	123D Design Model File
File extension 2D	VersaCAD 2D Drawing File
File extension 3DC	RoboCell Cell Setup File
File extension 3DL	Sierra LandDesigner 3D File
File extension A2L	ASAP2 ECU Description File
File extension ACT	Alma CAD/CAM Document
File extension ADI	AutoCAD Device-Independent Binary Plotter File
File extension ADT	AutoCAD Audit Log
File extension AFD	Alphacam Flame Drawing
File extension AFS	STAAD.foundation Project File
File extension ANY	AnyRail Layout Plan
File extension ARD	ArtiosCAD Workspace File
File extension ART	ArtCAM Model
File extension ASC	LTspice Circuit Schematic File
File extension ASM	Solid Edge Assembly File
File extension ASY	LTspice Symbol File
File extension ATT	Alphacam Lathe Tool File
File extension BBCD	BobCAD-CAM Document
File extension BCD	RealView Debugger Board Chip Definition File
File extension BDC	West Point Bridge Designer Design File
File extension BDL	CoCreate Bundle File
File extension BIT	Xilinx Bitstream File
File extension BLK	AutoCAD Block Template File
File extension BMF	FloorPlan File
File extension BPZ	Easy Blue Print Symbol Library
File extension BRD	Cadence Allegro PCB Design File
File extension BXL	Accelerated Designs PCB Library File
File extension CAD	BobCAD-CAM File
File extension CAM	Gerber CAM Job File
File extension CATPART	CATIA V5 Part File
File extension CATPRODUCT	CATIA V5 Assembly File
File extension CDDX	Circuit Diagram Document
File extension CDL	CADKEY Wireframe Design File
File extension CDW	KOMPAS Document
File extension CEL	MicroStation Cell Library
File extension CF2	Common File Format File
File extension CGR	CATIA Graphical Representation File
File extension CIRCUIT	KTechlab Circuit Design File
File extension CKD	CADKEY design file
File extension CMP	Solid Edge Wire Harness File
File extension CNC	PartMaster CNC File
File extension CND	Melco Condensed Embroidery File
File extension CYP	Home Designer Pro Project File
File extension CZD	CAD Zone Drawing
File extension DB1	Tekla Structures Model File
File extension DC	DesignCAD Design File
File extension DC1	DevCad Document
File extension DC2	DevCad Cam Pro Document
File extension DCD	DesignCAD Drawing
File extension DES	Pro/DESKTOP CAD File
File extension DFT	Solid Edge Draft Document
File extension DFX	Drafix CAD File
File extension DGB	FlashCAD Drawing Database
File extension DGK	Delcam 3D Model File
File extension DGN	MicroStation Design File
File extension DLV	CATIA 4 Export File
File extension DRA	OrCAD Drawing File
File extension DRG	AllyCAD Drawing File
File extension DRWDOT	SolidWorks Drawing Template
File extension DSG	Control Studio Document
File extension DSN	OrCAD Design File
File extension DST	Tajima Embroidery format
File extension DVG	Graphic Works Vector Graphic
File extension DWFX	Design Web Format XPS File
File extension DWG	AutoCAD Drawing Database File
File extension DWS	AutoCAD Drawing Standards File
File extension DWT	AutoCAD Drawing Template
File extension DXE	AutoCAD Data Extraction Template
File extension DXF	Drawing Exchange Format File
File extension DXX	AutoCAD Drawing Interchange Attribute File
File extension EASM	eDrawings Assembly File
File extension EDRW	SolidWorks eDrawings File
File extension EWB	Electronics Workbench Circuit Design File
File extension EWD	EasyWOOD Design File
File extension EZC	AutoCAD Ecscad Components Backup File
File extension EZP	AutoCAD Ecscad Project Backup File
File extension FAN	Form•Z Animation File
File extension FCD	FastCAD DOS Drawing
File extension FCSTD	FreeCAD Document
File extension FCW	FastCAD Windows Drawing
File extension FLX	FelixCAD Drawing
File extension FMZ	form-Z project file
File extension FNC	QuickCAM 3D CNC File
File extension FPD	Front Panel Designer Project
File extension FPP	Front Panel Project
File extension FZ	Fritzing Project File
File extension FZP	Fritzing Part File
File extension FZZ	Fritzing Shareable Project File
File extension G3D	GOM 3D File
File extension GBX	Gerber PCB File
File extension GDS	Graphic Data System File
File extension GINSPECT_PRJ	GOM Inspect Project File
File extension GSM	Graphic Description Language File
File extension GXC	General CADD Pro Component
File extension GXD	General CADD Pro Drawing
File extension GXH	General CADD Pro Hatch Pattern File
File extension GXM	General CADD Pro Macro File
File extension HCP	HydroCAD Project File
File extension HSC	Aspen HYSYS Simulation File
File extension HSF	HOOPS Stream Format File
File extension HUS	Husqvarna Embroidery File
File extension IAM	Inventor Assembly File
File extension IBA	Lectra Clothing Design Pieces File
File extension IC3D	IC3D Scene File
File extension ICD	IronCAD 3D Drawing File
File extension ICS	IronCAD 3D Drawing File
File extension IDV	Inventor Design View File
File extension IDW	Inventor Drawing
File extension IF	Procedimientos-Uno IFWin Project File
File extension IFCXML	Industry Foundation Classes XML File
File extension IFCZIP	Compessed IFC File
File extension IGS	IGES Drawing File
File extension IPF	iMPACT Project File
File extension IPJ	Inventor Project File
File extension IPN	Inventor Presentation File
File extension IPT	Inventor Part File
File extension ISE	Xilinx ISE Project
File extension ISO	Arbortext IsoDraw Document
File extension ISOZ	Compressed Arbortext IsoDraw Illustration
File extension JBC	Jam STAPL Byte-Code File
File extension JOB	MetaCAM Nest Job File
File extension JT	JT Open CAD File
File extension JVSG	Video Surveillance Project
File extension KIT	20-20 Design File
File extension LCF	ArchiCAD Library Container File
File extension LDR	LDraw Model File
File extension LI3D	Live Interior 3D Document
File extension LIN	AutoCAD Linetype File
File extension LIZD	Live Interior 3D Compressed Document
File extension LYC	bestIMAGE Compressed Design File
File extension LYR	bestIMAGE Design File
File extension MC9	Mastercam 9 Geometry File
File extension MCD	MiniCAD Design File
File extension MCX	MICRO CADAM-X/6000 Model Data File
File extension MDL	Lectra Modaris Clothing Design File
File extension MHS	Xilinx XPS Hardware Specification File
File extension MIN	Okuma CNC Program File
File extension MODEL	CATIA 3D Model FIle
File extension MP10	Multisim 10 Project File
File extension MP11	Multisim 11 Project File
File extension MP7	Multisim 7 Project File
File extension MP9	Multisim 9 Project File
File extension MS11	Multisim 11 Circuit Design File
File extension MS7	Multisim 7 Circuit Design File
File extension MS9	Multisim 9 Circuit Design File
File extension NEU	Pro/ENGINEER Neutral File
File extension NGC	Xilinx Generated Netlist File
File extension NPL	Xilinx ISE 5-6 Project File
File extension NWC	Navisworks Cache File
File extension NWD	Navisworks Document
File extension NWF	Navisworks File Set
File extension OLB	OrCAD Symbol Library File
File extension OPJ	OrCAD Project File
File extension PAT	AutoCAD Hatch Pattern File
File extension PC6	PowerCADD 6 Drawing File
File extension PC7	PowerCADD 7 Drawing File
File extension PHO	Gerber Photoplot File
File extension PIPD	PIPE-FLO Demo Project File
File extension PIPE	PIPE-FLO Project File
File extension PLA	ArchiCAD Project Archive
File extension PLN	ArchiCAD Project File
File extension PM3	Crouzet Logic Software M3 File
File extension PRG	PC-DMIS Part Program File
File extension PRO	KiCad Project
File extension PRT	CAD 3D part or component file
File extension PSF	AutoCAD PostScript Patterns File
File extension PSM	Solid Edge Sheet Metal File
File extension PSS	AutoCAD Plot Stamp Settings File
File extension PSU	PSU Designer Document
File extension PSV	Pipe System Viewer File
File extension PWD	Solid Edge Weldment Document
File extension PWT	AutoCAD Publish To Web Template
File extension QPM	Quick Pallet Maker Input Data
File extension RCD	LEGO MINDSTORMS Recording File
File extension RDF	Relux Project File
File extension RED	CADViewer Redline Markup File
File extension RML	Redline Markup Language File
File extension RND	AutoCAD Autoshade rendering slide file
File extension RSM	RouterSim Network Visualizer File
File extension RTC	AutoCAD Civil rating curve data file
File extension SAB	ACIS SAB Model File
File extension SAT	ACIS SAT 3D Model File
File extension SBP	OpenSBP CNC Program File
File extension SCAD	OpenSCAD Script
File extension SCH	CAD schematics file
File extension SHX	AutoCAD Compiled Shape File
File extension SKF	AutoSketch Drawing
File extension SLDASM	SolidWorks Assembly File
File extension SLDDRW	SolidWorks Drawing File
File extension SLDPRT	SolidWorks Part File
File extension SPT	SpeedTree Tree Data File
File extension STL	Stereolithography File
File extension SVD	SolidView Design File
File extension T3001	TARGET 3001! Circuit Design Project File
File extension TAK	TAK 2000 Thermal Model File
File extension TC2	TurboCAD 2D Mac Drawing
File extension TC3	TurboCAD 2D/3D Mac Drawing
File extension TCD	Technobox CAD Drawing
File extension TCM	TurboCAD Mac Drawing
File extension TCT	TurboCAD Drawing Template
File extension TCW	TurboCAD Drawing File
File extension TCX	TurboCAD 3D Model Text File
File extension TOPPRJ	TopSolid Project File
File extension UNT	AutoCAD Unit Definition File
File extension UPF	Unified Power Format File
File extension VND	Type3 Design File
File extension VTF	3DESIGN CAD File
File extension VWX	Vectorworks Design File
File extension XISE	Xilinx ISE Project File
File extension XV3	Lattice XVL Geometry File
File extension X_B	Parasolid Model Part File
File extension X_T	Parasolid Model Part File