| sdb | Microsoft Windows Compatibility Solution Database |
| sdb | MonKey Office SQLite Database |
| sdb | SAP2000 Model Data |
| sdb | ServerBoss Database |
| sdb | SocialDecks Blog File |
| sdb | SparkleDB Database |
| sdb2 | Shure Wireless Workbench Database |
| sdbs | BLAST+ Personal Database |
| sdbx | Autodesk AutoCAD Civil 3D Survey Database |
| sdbz | Symantec EP Support Tool Information File |
| sdc | Autodesk Land Desktop Stage Discharge Curve Data |
| sdc | Paragon SlovoEd Dictionary Database |
| sdcp | SimpleDiagrams Color Palette |
| sdct | Pocket Diary Spelling Dictionary |
| sdd | BPM Studio Editor Peak Data |
| sdd | Smart Diary Suite Data |
| sddb | Medi-Span Standard Drug Database |
| sde | DrumBeat Exported Data |
| sdexp | PTC Creo Elements/Direct Model Export Data |
| sdf | FreeWave Tool Suite Data |
| sdf | MDL Molfile Data |
| sdf | Microsoft SQL Server Database |
| sdf | Pervasive SQL Exported Data |
| sdf | Petrosys Seismic Data |
| sdf | Soundweb Designer Data |
| sdf | Xilinx ISE Standard Delay Format Data |
| sdh | SurveyPro SDH Data |
| sdi | Fidonet Software Distribution Network Info |
| sdi | Seadragon Index Data |
| sdi | Smart Diary Suite Index Data |
| sdi | SteelPac Interchange Data |
| sdif | Hy-Tek Meet Manager SDIF Data |
| sdinstall | Speckie Dictionary Installation Data |
| sdir | Logic Pro Space Designer Impulse Response |
| sdk | Smart Diary Suite Cookbook |
