| landsat | Landsat Thematic Mapper Data |
| lang | Skype Language File |
| langz | DigiChat Language Data |
| lao | EPSON Smart Panel Data |
| lar | Liquid Audio Player Registration Data |
| las | Lidar Data Exchange Format File |
| las | Log ASCII Standard |
| lasso | PLINK LASSO Data |
| last | Steam Last Data |
| lat | Crossword Express Lattice Data |
| lat | LaTeX Data |
| lau | AutoClient Local Authentication Data |
| lav | Liquid Audio Player Voucher Data |
| lavs | Liquid Audio Player Secured Download Data |
| lax | AnetHelpTool JavaHelp Viewer File |
| lay | Apple DVD Studio Pro Layout Data |
| lay | ArchiCAD PlotMaker Layout |
| lay | eSignal Layout Data |
| lay | Lightscape Layer File |
| lay | MAME Layout Data |
| lay | MasterCook Layout Data |
| lay | Pro/ENGINEER Layout |
| lay | Rhino 3D Layer |
| lay | Tecplot 360 Layout Data |
| lay | Track Builder 3 Layout Data |
| layout | Adobe Premiere Workspace Layout |
| layout | Apple MainStage Layout Data |
| layout | BookWright Layout Data |
| layout | Concordance Table Layout Data |
| layout | Steam Client GUI Layout Data |
