| 0001 | WSCAD Project |
| 2dr | Cadwork 2D Road Project |
| 3b | 3D-Coat Project |
| 3d2 | Serif 3DPlus v2 Project |
| 3dmk | Autodesk 123D Make Project |
| 3dp | 3DMark 2011 Project |
| 3dp | ArtCAM Pro Project |
| 3dp | Serif 3DPlus Project |
| 3dz | Easy 3D Creator Project |
| 3mx | 3Shape Convince Project Package |
| 3pj | 3D Text Commander Project |
| 3se | 3Shape Interface Export Data |
| a$v | QuarkXPress Automatically Saved Project |
| a2d | AVStoDVD Project |
| a2w | Alice v2 Project |
| a3p | Alice v3 Project |
| a4p | A4Desk Pro Project |
| aacx | AdminStudio Automated Application Converter Project |
| abkprj | Ashampoo Backup Project |
| aca | Project Manager Workbench Project |
| acb | ATLAS.ti 6 Copy Bundle |
| accdp | Microsoft Access 2007 Project |
| acd | Sony ACID Pro Project |
| acd-bak | Sony ACID Pro Project Backup |
| acfproj | SCADAPack Workbench Project |
| ach | RSLogix 5 Project |
| aclx | Analytics Project |
| aclx | InstallShield Analysis App Project |
| acp | ArCon Project |
| actproj | Visual Studio .NET ACT Project |
| acz | AppCraft Project |
| ad | Anno Designer Project |
| addoc | AudioDesk Project |
| adp | Microsoft Access Project |
| adpr | Atlantis Word Processor Project |
| advixeproj | Intel Advisor Project |
| adw | Asprova Project |
| aep | Adobe After Effects Project |
| aepx | Adobe After Effects XML Project |
| aesx | UBTECH Alpha 1 Pro Robot Project |
| aexml | STATISTICA Analysis Explorer Project |
| agg | AggFlow 6 Project |
| agif | Active GIF Creator Project |
| agk | App Game Kit Project |
| agp | AppGini v2 Project |
| agp | ArtGem Project |
| agr | Grace Project |
| aia | MIT App Inventor Project |
| aip | Actual Installer Project |
| aip | Advanced Installer Project |
| ajcs | AJC Sync Project |
| ajg | AJC Grep Project |
| al8 | AAA Logo Project |
| all | AlligatorSQL Project |
| all | Cubasis Project |
| alp | AnyLogic Project |
| alpx | ACDSee Luxea Video Editor Project |
| am2 | AutoPlay Menu Studio 2.0 Project |
| am3 | AutoPlay Menu Studio 3.0 Project |
| am4 | AutoPlay Media Studio 4 Project |
| am5 | AutoPlay Media Studio 5 Project |
| am6 | AutoPlay Media Studio 6 Project |
| am7 | AutoPlay Media Studio 7 Project |
| ameproj | Adobe Media Encoder Project |
| aml | Morpheus Photo Morpher Project |
| amplxeproj | Intel VTune Amplifier XE Project |
| amsm | Atomic Mail Sender Project |
| amsproj | Ashampoo Music Studio Project |
| amt | AVSnap Project |
| amw | Anark Media Workspace |
| an | Adobe Edge Animate Project |
| and | Apadana Project |
| androidproj | Microsoft Visual Studio Android Project |
| animeproj | Anime Studio Project |
| anjuta | Anjuta DevStudio Project |
| ap12 | Siemens TIA v12 Project |
| ap13 | TIA Portal v13 Project |
| ap14 | TIA Portal v14 Project |
| ap15 | SIMATIC WinCC v15 Project |
| ap16 | TIA Portal v16 Project |
| apj | Angel Debug Monitor Project |
| apj | Archibus Project Preferences Data |
| apj | ARM Project Manager Project |
| apj | Autodesk AutoCAD Architecture Project |
| apk | Active Tutor Project |
| app | CA Visual Objects Project |
| approj | ActivePresenter Project |
| apr | Vector NTI Alignment Project |
| aprj | ApacheConf Project |
| aproj | Leapfrog Geo Project |
| apt | appTranslator Project |
| apt | AutoPlay Media Studio Template |
| apz | Autoplay Media Studio Exported Project |
| architect | SQL Power Architect Project |
| arcproj | ARRIRAW Converter Project |
| argo | ArgoUML Project |
| arh | ArheoStratigraf Project |
| arh | Siemens ProTool Compressed Project |
| arp | Arlequin Project |
| arproj | Spark AR Studio Project |
| art42 | Bernina Explorations v1.x Project |
| art50 | Bernina Embroidery Software v5.0 Design |
| art60 | Bernina Embroidery Software v6.0 Design |
| artproj | Artifacts for Visual Studio Project |
| artx | Artisteer Project |
| asdvdcrtproj | Aimersoft DVD Creator Project |
| ashprj | Ashampoo Burning Studio Project |
| asmproj | Atmel Studio Assembler Project |
| asprj | Altova XMLSpy Scripting Project |
| asproj | Visual Studio Analysis Services Project |
| assembly | DNASTAR SeqMan NGen Assembly Project |
| asta | Astah Project |
| asw | ACDSee Slideshow Wizard Project |
| ata | Antenna Web Design Studio Project |
| atgcproj | Genetyx ATGC Project |
| atlcb | ATLAS.ti 7 Copy Bundle |
| atlpac | ATLAS.ti 1 Transfer Bundle |
| atlproj | ATLAS.ti 8 Project Bundle |
| ato | ATO Modeler Project |
| atp | Automise Project |
| atp | Visual Studio ACT Project |
| atpz | Automise Compressed Project |
| atsuo | Atmel Studio Project |
| atx5 | Automise 5 XML Project |
| atz3 | Automise 3 Project |
| atz4 | Automise 4 Project |
| aup | Audacity Project |
| aup3 | Audacity v3 Project |
| aurx | AutoREALM Project |
| autoplay | AutoPlay Media Studio Project |
| avp | Avid Media Composer Project |
| avrasmproj | Atmel Studio Legacy Assembler Project |
| awx | ArcIMS XML Project |
| axp | AppGini v3 Project |
| b4f | Burn4Free Project |
| bamp | Easy Button and Menu Maker Project |
| band | GarageBand Project |
| baserproj | DNA Baser Sequence Alignment Project |
| bbmodel | Blockbench Project |
| bbproject | BBEdit Project |
| bbprojectd | BBEdit Project Package |
| bcard | Business Card Composer Project |
| bcp | Bamcompile Project |
| bcpf | Bandicut Video Cutter Project |
| bcw | BusinessCards MX Project |
| bdsgroup | Borland Developer Studio Project Group |
| bdsproj | Borland Developer Studio Project |
| bfp | Quest Benchmark Factory Project |
| bhw | Blophome Published Project |
| bif | Get Backup Project |
| bil | RiadaBillboard Project |
| bimproject | BIM Server Project |
| bip | Blue Ink Project |
| biz | ArcSoft ShowBiz Project |
| blc | Biacore Instruments Project |
| bld | Broderbund 3D Home Architect Project |
| bld | EnergyPRO Project |
| bld | Envisioneer Building Project |
| ble | BIAevaluation Project |
| bls | Biacore BIAlite Project |
| bmc | Bolide Movie Creator Project |
| bmo | SIMATIC WinCC Script |
| bmpr | Balsamiq Mockups Project |
| bmte | Bome Midi Translator Pro Encrypted Project |
| bmtp | Bome Midi Translator Pro Project |
| bmv | movieFOLiO Project |
| box3d | Box Shot 3D Project |
| bp1 | SmartWare Project Backup |
| bpel | Fiorano Studio BPEL Project |
| bph | Blophome Saved Project |
| bpn | ArchiCAD Project Backup |
| bpp | BatchPhoto Project |
| bpp | Musicmatch Burner Plus Project |
| bpr | BackupXpress Project |
| bpr | Borland C++ Builder Project |
| bro | Creatacard Brochure Project |
| brt | Booria Carpet Designer Robotuft Project |
| bsdesign | Bootstrap Studio Design Project |
| bsp | BestAddress HTML Editor Project |
| bsproj | BannedStory Project |
| bt | BTwin Project |
| btproj | Microsoft BizTalk Project |
| bvp | VodaHost BlueVoda Project |
| bwl | BrainStorm Project |
| bwp | Book Writer Project |
| bwpr | PlainHTML Project |
| bxp | BasicX Project |
| c2c | CopyToDVD Project |
| c3p | Construct 3 Project |
| c3p | Core 3 Xpanel Project |
| cal | Creatacard Calendar Project |
| camerror | Camtasia Studio Error Log |
| camproj | Camtasia Studio Project |
| camthtr | Camtasia Studio Theater Project |
| cap | Code Architect Project |
| cap | Construct Project |
| capcut | CapCut Project |
| capobundle | Capo Project Bundle |
| caproj | Scirra Construct Project |
| capx | Construct Compressed Project |
| car | Creatacard Quarter-Fold Card Project |
| caustic | Caustic Audio Project |
| cbp | Code::Blocks Project |
| cbproj | C++ Builder Project |
| ccbproj | CocosBuilder Project |
| ccproject | Character Creator Project |
| ccs | CodeCharge Studio Project |
| cd | Steinberg WaveLab Basic Audio CD Project |
| cd4 | Dymo DiscPainter Document |
| cdp | CD Architect Project |
| cdp | Steinberg WaveLab Basic CD Project |
| cdprj | CD Menu Creator Project |
| cdproj | CppDepend Project |
| cdt | ImgBurn CD-Text Project |
| cedprj | Ashampoo CoverEditor Project |
| celtx | Celtx Project |
| cenon | Cenon Project |
| cenon~ | Cenon Project Backup |
| cep | CostOS Estimating Project |
| cep | Vector NTI Assembly Project |
| cer | Creatacard Certificate Project |
| cfp | C-Free Project |
| cfp | Subtitle Workshop Custom Format Project |
| cgp | Xilinx CORE Generator System Project |
| che | CHwinEHE Project |
| chkn | IMVU Project |
| chmprj | Abee CHM Maker Project |
| chp | CodeHealer Project |
| chproj | Adobe Character Animator Project |
| cin | Calculux Indoor Project |
| cinema4d | Maxon Cinema 4D Project |
| cl | CLwin Project |
| cl4 | Easy CD Creator 4 Project |
| cl5 | Roxio Easy CD Creator 5 Project |
| clg | Collage Maker Project |
| clk | Corel R.A.V.E Project |
| clpprj | CodeLobster IDE Project |
| clw | Grade Organizer Project |
| cmmcd | Camtasia Studio MenuMaker Project |
| cmmp | Camtasia MenuMaker Project |
| cmmtpl | Camtasia MenuMaker Template |
| cmproj | Camtasia for Mac Project |
| cms | Coach Project Archive |
| cna | Catena Project |
| cnp | Bentley CONNECT Project |
| companylogo | Company Logo Designer Project |
| con | Canoco Project |
| contentproj | XNA Game Studio Game Content Project |
| converterx | SiMX TextConverter Project |
| corelproject | Corel PhotoAlbum Project |