| 0001 | WSCAD Project |
| 0002 | WSCAD Project |
| 0003 | 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 |
| ArtCAM Pro Project |
| 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 |
| acid | Sony ACID Pro Project |
| acl | Analytics Project |
| aclx | Analytics Project |
| 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 |
| ArtGem Project |
| agr | Grace Project |
| aia | MIT App Inventor Project |
| aifb | AIF Builder Project |
| aip | Actual Installer Project |
| Advanced Installer Project |
| ajcs | AJC Sync Project |
| ajg | AJC Grep Project |
| al8 | AAA Logo Project |
| all | AlligatorSQL Project |
| 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 |
| ameprojcc | Adobe Media Encoder Project |
| ameprojcs5 | Adobe Media Encoder Project |
| ameprojcs6 | 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 |
| ap3 | Asprova Project |
| apj | Angel Debug Monitor Project |
| Archibus Project Preferences Data |
| ARM Project Manager Project |
| Autodesk AutoCAD Architecture Project |
| apk | Active Tutor Project |
| app | CA Visual Objects Project |
| approj | ActivePresenter Project |
| apr | Apadana Project |
| Vector NTI Alignment Project |
| aprj | ApacheConf Project |
| aproj | Leapfrog Geo Project |
