| 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 |
| layoutdesigner | Intuit QuickBooks QuickBooks Layout Designer Data |
| layx | PTV VISSIM Vehicle Network Data |
| laz | LASzip Compressed Lidar Data |
| lbd | Life Balance Data File |
| lbd | Nicolet OMNIC Library |
| lbe | Life Balance XML Exchange Data |
| lbg | dBASE IV Label Generator Data |
| lbk | ArchiCAD PlotMaker Layout Book |
| lbl | Now Contact Label Template |
| lbo | dBASE IV Compiled Label |
| lbr | EAGLE Library File |
| lbt | Nicolet OMNIC LBT Library |
| lbv | T-Online Ob4hbci Layout Print File |
| lbxcol | Libronix DLS Resource Collection |
| lbxdtp | Libronix DLS Data Type |
| lbxlls | Logos 3 LLS Data |
| lbxoeb | Libronix DLS Resource |
