| Extension | Description | Views |
| 10 | IBM Voice Type Script File | 46014 |
| abs | Absolute Database File | 76185 |
| accdb | Access Database File | 61640 |
| adb | Alpha Five Database Information File | 27797 |
| bfs | Tivoli Storage Manager File | 28963 |
| blg | Binary Performance Log File | 24794 |
| btn | Buttonware File | 32179 |
| cat | Advanced Disk Catalog File | 27930 |
| cdb | Symbian OS Contacts Database File | 32368 |
| cdd | ConceptDraw Document File | 71081 |
| cdw | CadKey Organized Dialogue File | 99924 |
| cfp | Quicken Cash Flow Projection File | 27295 |
| cgd | Cricket Graph Data File | 27310 |
| cli | Client Management System Customer File | 25946 |
| csv | Comma Seperated Values | 90282 |
| ctt | Messenger contacts file | 23478 |
| d10 | Drake Software Data File | 5820 |
| dat | DAT | 392725 |
| dat | Inno Setup Uninstall Log | 37890 |
| data | CoreFSIF database | 77917 |
| db | Database File | 431177 |
| db3 | dBase III Database File | 44527 |
| dbc | Visual FoxPro Databse File | 33009 |
| dbf | Database File | 129661 |
| ddm | Alpha Five Table Objects File | 24840 |
| dgdat | DoubleGIS Database File | 28317 |
| dropbox | Dropbox File | 68844 |
| dsn | ODBC Data Source File | 46056 |
| dta | Stata Dataset File | 37954 |
| edb | Exchange Information Store Database File | 43219 |
| esp | ACD/Labs Data File | 45122 |
| et | Easitech Lesson Data File | 41574 |
| etl | Microsoft Event Trace Log File | 119056 |
| ex4 | Expert Advisor File | 63542 |
| exp | Export File | 42700 |
| fcd | First Choice Database File | 15330 |
| fdb | Dynamics NAV Database File | 57514 |
| fid | Bruker Aspect NMR Data File | 14405 |
| fil | Files List File | 73522 |
| fo | XSL-FO Form File | 24481 |
| fp3 | FileMaker Pro 3 Database File | 19660 |
| frm | MySQL Database Format File | 45392 |
| gab | Global Address Book File | 21192 |
| gdb | Borland Interbase Database Files | 51954 |
| gp3 | Guitar Pro 3 Tablature File | 40188 |
| groups | WebMoney Group File | 21890 |
| ics | iCalendar Calendar File | 116270 |
| id2 | Windows Live Messenger Emoticon File | 24245 |
| idcl | Inventor Desktop Content File | 33351 |
| iff | Interchange File Format File | 30601 |
| iif | Quickbooks Interchange File | 20081 |
| ins | Inspiration File | 50892 |
| irx | Brewer Irradiation File | 39969 |
| itdb | iTunes Database File | 32264 |
| itl | Music Library File | 30857 |
| itx | ITX Form Template | 17402 |
| jgw | JPG World file | 27856 |
| joined | HJSplit Data File | 25506 |
| kdf | VisiQuest Data File | 26190 |
| kwi | Navigation Data File | 45341 |
| laccdb | Microsoft Access Lock File | 61608 |
| lbl | dBase Label File | 35228 |
| ldf | Server Transaction Log File | 36134 |
| ldif | LDAP Data Interchange Format File | 29605 |
| lib | AS/400 Library File | 50037 |
| lock | Net Framework Lock File | 59112 |
| mar | Microsoft Access Report File | 14944 |
| mat | Microsoft Access Shortcut File | 16106 |
| mat | MATLAB Binary File | 16949 |
| mbb | ManaBook File | 22554 |
| md | Chaos Desktop Metadata File | 74895 |
| mdb | Microsoft Access Database File | 105758 |
| mde | Microsoft Access Compiled Database File | 39579 |
| mdl | Rose Model File | 49944 |
| mdx | Database Index File | 135505 |
| menc | Windows Mobile Encrypted File | 53604 |
| met | eMule Information File | 41797 |
| mir | Bauhaus Mirage Data File | 31709 |
| mls | Milestones Simplicity Project File | 21743 |
| mny | Microsoft Money Data File | 24278 |
| mobi | Mobipocket E-Book File | 193809 |
| mpd | Microsoft Project Database File | 14849 |
| mpl | Playlist Data File | 60050 |
| mpls | Mathcad Font File | 11157 |
| mpp | Microsoft Project File | 81543 |
| mta | AllShare Metadate File | 34597 |
| net | netViz Project File | 45883 |
| nfs | Network File System Temporary File | 25052 |
| nm | Number Magic File | 22210 |
| ntw | Lode Data Network File | 34873 |
| odp | OpenOffice Presentation File | 90910 |
| ods | OpenOffice Spreadsheet File | 194755 |
| ofc | Open Financial Connectivity File | 26075 |
| ofx | Open Financial Exchange File | 41965 |
| one | OneNote Document File | 53531 |
| opd | Optical Path Difference File | 26138 |
| org | Lotus Organizer File | 37233 |
| ost | Outlook Offline File | 31613 |
| out | Output File | 44124 |
| ovl | Rollercoaster Tycoon Data File | 27093 |
| p | Database Procedure File | 32775 |
| p2p | FolderShare File | 23748 |
| pck | Received Package File | 45550 |
| pdb | PowerDesigner physical model | 73873 |
| pf | Windows Prefetch File | 80165 |
| pfl | Family Lawyer Data File | 22943 |
| pj2 | Projector File | 19164 |
| pkt | Packet Tracer Network Simulation File | 44787 |
| poi | Magellan Maestro POI File | 24796 |
| pps | Powerpoint Slideshow File | 171498 |
| ppsx | Microsoft Office PowerPoint Slide Show File | 70358 |
| ppt | Powerpoint Slideshow File | 326055 |
| pptx | Powerpoint Presentation File | 362944 |
| pst | Outlook Personal Information File | 86499 |
| ptb | Power Tab Editor File | 33177 |
| ptt | MapPoint Template File | 25571 |
| qfx | Quicken Financial Exchange File | 29664 |
| qif | Quicken Import File | 41463 |
| qrp | QuickReport Report Files | 59370 |
| rdata | R Data File | 26151 |
| rdb | Redis Database File | 25884 |
| rpt | Report File | 70024 |
| rsd | RealSQLDatabase File | 46152 |
| sal | SORITEC Data File | 39833 |
| sbf | SmartBroker Pro Data File | 32741 |
| sfv | Simple File Verification | 192293 |
| shs | Shell Scrap File | 308565 |
| snp | Microsoft Acess Report Snapshot File | 35015 |
| spo | SPSS Data Output File | 28450 |
| sps | IBM SPSS File | 24488 |
| sql | Structured Query Language Data File | 62761 |
| sqlite | SQLite Database File | 65694 |
| stp | STEP File | 28139 |
| str | dBASE Structure List Object File | 39842 |
| ta0 | TaxAct File | 18612 |
| tar | Compressed Tape Archive File | 48156 |
| tbk | FoxPro Memo Field Backup File | 10732 |
| tdt | Thor Datatree File | 43985 |
| tec | Tecplot Analysis File | 149322 |
| tps | Clarion TopSpeed Data File | 10043 |
| tps | Multi Channel Measurement File | 5143 |
| tvr | Navicat for MySQL File | 29875 |
| tw | TW File | 31752 |
| uccapilog | UCC API Log File | 52018 |
| v2 | Microsoft Live Messenger Data file | 24482 |
| vce | Visual CE Class Type File | 31212 |
| vcf | vCard File | 73298 |
| w02 | Multiple Archive File | 41300 |
| wft | Nicolet WFT Export File | 22728 |
| wlmp | Live Movie Maker Project File | 142261 |
| wmdb | Windows Media Database File | 28036 |
| woc | Widows Orgchart Organization Chart File | 13227 |
| woc | Microsoft Office 2007 Organization File | 13122 |
| wtc | Watertec Database | 27838 |
| xlsx | Microsoft Excel XML File | 566026 |
| xml | Extensible Markup Language | 79348 |
| xtm | Xtremsplit Data File | 32605 |
| zix | Quicken Data File | 13766 |