| lsdx | Apex Z3 Lighthouse Secure Data |
| lse | Oracle Utilities Load Analysis Input |
| lsf | LISREL System Data |
| lsf | Logos Library System Book Data |
| lsg | LimeSurvey Group Structure XML |
| lsgfx | Livestream Studio Graphics Data |
| lsi | SAP Business Objects Local Security Information File |
| lsim | LogicSim Circuit |
| lsl | LightScribe Label |
| lslibrary | LittleSnapper Library Package |
| lsn | MakeMusic Finale Lesson |
| lsopt | LS-OPT Data |
| lsp | Audacity LSP Data |
| lsp | LANsurveyor Poll List |
| lsq | PaleoMag Least Squares Data |
| lsq | ZOOM MRS-802 Phrase Loops Data |
| lsr | LANsurveyor Report |
| lst | Adobe Font List |
| lst | ALSee List Data |
| lst | BPM Studio Playlist |
| lst | Concordance Word List Data |
| lst | E-Sword v8 Verse List |
| lst | Family Tree Maker Error Log |
| lst | Holux MapShow Map List |
| lst | IMail Server List Server Mail |
| lst | Ingres Dump List Data |
| lst | Now Contact List Template |
| lst | Oracle Database Spool Data |
| lst | Orchida Knitting System List Data |
| lst | PTC Creo Feature List Data |
| lst | SAS Procedure Output |
| lst | SignIQ Field List |
| lstx | E-Sword v9 Verse List |
| lsu | LANsurveyor Map |
| lsw | DxLibraryStudio Workspace |
