| 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 |
| sdkmesh | Microsoft DirectX SDK Mesh Data |
| sdku | Sudoku Solver Puzzle |
| sdl | Alias Wavefront Scene Description Language Data |
| sdl | Corel Paradox Script |
| sdl | SmartDraw Library |
| sdl | Suunto Dive Log |
| sdlprofile | SDL Trados Exported User Profile |
| sdlrpx | SDL Trados Return Package |
| sdltb | SDL MultiTerm Termbase |
| sdltm | SDL Trados Translation Memory |
| sdlxliff | SDL Trados XLIFF Localization |
| sdm | BrainVoyager QX Design Matrix |
| sdm | Smart Diary Suite Data |
| sdm | STATISTICA Workspace |
| sdm | Sun Download Manager Download Instruction Data |
| sdmx | Statistical Data and Metadata eXchange Dataset |
| sdn | Smart Diary Suite Ingredients Data |
