| lfview | Leapfrog Viewer Scene |
| lg | Progress OpenEdge Database Log |
| lg0 | IBM Tivoli Monitoring Log |
| lg1 | IBM Tivoli Storage Manager Log Backup |
| lg1 | Microsoft Message Queuing Log |
| lg1 | OptionVue Portfolio Manager LGN Backup |
| lg1 | ScadaWorks ScadaBuilder Log |
| lg2 | HotMux Thermocouple Data Log |
| lg2 | Microsoft Message Queuing Log |
| lg2 | OptionVue Portfolio Manager LGN Backup |
| lg2 | ScadaWorks ScadaBuilder Log |
| lg3 | OptionVue Portfolio Manager LGN Backup |
| lgb | Intuit QuickBooks Encrypted Login Data |
| lgb | PC LogBook Data |
| lgc | Corel WordPerfect DTD Compiler Logic Data |
| lgc | Logicator Data |
| lgc | Microsoft Windows Application Log |
| lgc | SimpleK Database |
| lgd | Autodesk Simulation Mechanical DDAM Statistics Data |
| lgd | Microsoft Windows Application Log |
| lge | BallStat League Data |
| lgen | PLINK Long-format Genotype File |
| lgf | LeechGet FTP Queue |
| lgf | Microsoft Windows Application Log |
| lgf | PMSCAN Log |
| lgg | Microsoft Windows Application Log |
| lgh | Intouch HMI Historical Log File |
| lgh | Microsoft Windows Application Log |
| lgh | Pro/ENGINEER Light Data |
| lgi | Multimedia Logic Data |
