| File extension |
File description |
Developer/Producer |
| .l |
Lex Source File |
Mike Lesk |
| .l01 |
EnCase Logical Evidence File |
Guidance Software |
| .l3d |
Black & White Graphics File |
Lionhead Studios |
| .l4d |
Cinema 4D Layout File |
MAXON Computer |
| .l6t |
Line 6 Tone File |
Line 6 |
| .la |
Lossless Audio File |
La |
| .lab |
WordPerfect Label Definition File |
Corel |
| .laby |
Laby Level File |
Laby |
| .laccdb |
Microsoft Access Lock File |
Microsoft |
| .lan |
ERDAS LAN File |
ERDAS |
| .lang |
Minecraft Language File |
Mojang |
| .las |
LIDAR Data Exchange File |
ASPRS |
| .lasso |
Lasso Database-Driven Web Page |
LassoSoft |
| .lastlogin |
Minecraft User Credential File |
N/A |
| .latex |
LaTeX Document |
N/A |
| .lay |
DVD Studio Pro Layout File |
Apple |
| .layout |
Code::Blocks Workspace Layout File |
Code Blocks |
| .lbc |
Cloaked Affiliate Link Builder Saved Link |
Curry K. Software |
| .lbi |
Dreamweaver Library Item |
Adobe Systems |
| .lbl |
NiceLabel Template File |
Euro Plus |
| .lbm |
Deluxe Paint Bitmap Image |
Electronic Arts |
| .lbr |
LU Library Archive |
N/A |
| .lbs |
Omnis Library |
Raining Data |
| .lbt |
FoxPro Label Memo |
N/A |
| .lbu |
Cloaked Affiliate Link Builder Settings File |
Curry K. Software |
| .lbx |
FoxPro Label File |
Microsoft |
| .lcb |
Living Cookbook Backup File |
Radium Technologies |
| .lcc |
Capture One Lens Cast Correction File |
Phase One |
| .lcd |
CDSpace Emulated Disk Image |
Space International |
| .lcf |
ArchiCAD Library Container File |
Graphisoft |
| .lck |
Program Lock File |
N/A |
| .lcm |
Lipikar Custom Map File |
Lipikar |
| .lcn |
License File |
Trymedia Systems, Inc. |
| .ld2 |
Lingoes Dictionary File |
Lingoes Project |
| .ldb |
Microsoft Access Lock File |
Microsoft |
| .ldf |
SQL Server Transaction Log File |
Microsoft |
| .ldif |
LDAP Data Interchange Format File |
N/A |
| .ldm |
VolumeViz Multi-Resolution Volume File |
Visualization Sciences Group |
| .ldr |
LDraw Model File |
LDraw.org |
| .lds |
Binutils LD Linker Script |
The GNU Project |
| .ldt |
Eulumdat Formatted Luminaire Data File |
DIAL |
| .ldw |
Virtual Villagers Saved Game File |
LDW Software |
| .lef |
LEN Exchange Format File |
N/A |
| .legal |
DaveTech Legal Document |
DaveTech |
| .lemon |
LemonShare.net Download |
LemonShare.net |
| .less |
LESS Style Sheet |
Alexis Sellier |
| .letter |
Undeliverable Mail File |
N/A |
| .lex |
Adobe Linguistic Library Data File |
Adobe Systems |
| .lfo |
Alchemy Low Frequency Oscillator Presets File |
Camel Audio |
| .lfp |
IPRO LFP File |
IPRO Tech |
| .lfs |
Samsung Phone params.lfs File |
Samsung |
| .lgc |
SimpleK Database File |
Prosystech |
| .lgf |
PMSCAN Log File |
Palmer Performance |
| .lgh |
HMI Historical Log File |
N/A |
| .lgi |
Multimedia Logic File |
Softronics |
| .lgl |
LeechGet Download List |
LeechGet |
| .lgo |
Logo Instructions File |
Softronics |
| .lgp |
Final Fantasy Media Archive |
Square Enix |
| .lha |
LHARC Compressed Archive |
N/A |
| .lhr |
Quicken Financial Life for Mac File |
Intuit |
| .lhs |
Literate Haskell Script |
N/A |
| .li3d |
Live Interior 3D Document |
BeLight Software |
| .lib |
Generic Data Library |
N/A |
| .library-ms |
Windows Library Description File |
Microsoft |
| .lic |
Software License File |
N/A |
| .licensekey |
iPartition License Key File |
Coriolis Systems |
| .licenses |
Visual Studio Licensed Classes File |
Microsoft |
| .licx |
Visual Studio License File |
Microsoft |
| .lid |
Kodak EasyShare Album File |
Kodak |
| .lif |
Leica Image File |
Leica Microsystems |
| .life |
LIGHT File |
Light of Creativity |
| .lily |
PCSX2 LilyPad Configuration File |
The PCSX2 Team |
| .lin |
AutoCAD Linetype File |
Autodesk |
| .link |
iPod Link File |
N/A |
| .linx |
iPod Links Folder |
N/A |
| .lip |
Bethesda Softworks Lip Sync File |
Bethesda Softworks |
| .lis |
SQR Output File |
N/A |
| .lisp |
Lisp Source Code File |
N/A |
| .list |
JAR Index File |
Oracle |
| .lit |
eBook File |
Microsoft |
| .livereg |
Symantec Antivirus Session File |
Symantec |
| .liveupdate |
Symantec LiveUpdate File |
Symantec |
| .lix |
Logos Library System File |
Logos Bible Software |
| .lizd |
Live Interior 3D Compressed Document |
BeLight Software |
| .ljp |
Lossless JPEG Image |
Joint Photographic Experts Group |
| .ll |
List & Label Preview File |
Combit |
| .llb |
LabVIEW Library File |
National Instruments |
| .llm |
Linden Lab Mesh File |
Linden Research |
| .llx |
LabVIEW VI Library Backup File |
National Instruments |
| .lmk |
Sothink Logo Maker Image |
SourceTec Software |
| .lms |
LenMus Score File |
LenMus |
| .lmu |
RPG Maker Map File |
Enterbrain |
| .lmx |
Landmark Exchange File |
Nokia |
| .lnd |
3D Landscape File |
Upperspace |
| .lng |
Language Application Support File |
N/A |
| .lnk |
Windows File Shortcut |
Microsoft |
| .lnst |
Adobe InDesign Line Presets File |
Adobe Systems |
| .lnt |
PC-lint/FlexeLint Configuration File |
Gimpel Software |
| .lnx |
Atari Lynx ROM |
N/A |
| .lo |
Interleaf Compiled Lisp File |
BroadVision |
| .loaders |
GTK+ Loaders File |
N/A |
| .loc |
GPS Location File |
N/A |
| .localstorage |
WebKit Local Storage Data File |
The WebKit Open Source Project |
| .lock |
Lock File |
N/A |
| .lockfile |
Mac OS X PLIST Lock File |
Apple |
| .lod |
Heroes of Might and Magic 3 Graphics File |
Ubisoft |
| .lof |
Audacity File List |
Audacity |
| .log |
Log File |
N/A |
| .log1 |
Windows Registry Hive Log File |
Microsoft |
| .log2 |
Windows Registry Hive Log 2 File |
Microsoft |
| .logic |
Logic Pro Project File |
Apple |
| .logonvista |
LogonStudio Windows Vista Logon Screen |
Stardock |
| .logonxp |
LogonStudio Windows XP Logon Screen |
Stardock |
| .lol |
LOLCODE Source Code FIle |
Adam Lindsay |
| .look |
SpeedGrade Look File |
Adobe Systems |
| .loov |
Smadav Virus Definitions File |
Smadsoft |
| .lop |
MasterCook Layout File |
ValuSoft |
| .love |
LÖVE Game File |
LÖVE |
| .lp |
Lightscape Preparation File |
Autodesk |
| .lp2 |
iLEAP Word Processing Document |
C-DAC |
| .lp7 |
LP7 Digitally Signed File |
Lex Persona |
| .lpb |
LaserTank Replay File |
JEK Software |
| .lpd |
Lookout Protocol Driver File |
National Instruments |
| .lpdb |
Librarian Pro Database File |
Koingo Software |
| .lpdf |
Localized PDF File |
Apple |
| .lpk |
ArcGIS Layer Package |
ESRI |
| .lpmd |
LPMD Molecular Data File |
LPMD |
| .lpp |
LabelPrint Project File |
CyberLink |
| .lproj |
Localized Project Folder |
N/A |
| .lps |
Bryce Leaf Shape File |
DAZ Productions |
| .lqr |
SQ Compressed LBR Archive |
N/A |
| .lqt |
Liquid Audio File |
Liquid Digital Media |
| .lrc |
Lyrics File |
N/A |
| .lrcat |
Adobe Photoshop Lightroom Catalog File |
Adobe Systems |
| .lrdata |
Adobe Photoshop Lightroom Data File |
Adobe Systems |
| .lrdb |
Photoshop Lightroom Database |
Adobe Systems |
| .lrec |
Inter-Tel Web Conference Recording |
Inter-Tel |
| .lrf |
Sony Portable Reader File |
Sony |
| .lrplugin |
Photoshop Lightroom Plug-in |
Adobe Systems |
| .lrs |
Librie Reader Source File |
N/A |
| .lrsmcol |
Photoshop Lightroom Smart Collection Settings File |
Adobe Systems |
| .lrtemplate |
Adobe Photoshop Lightroom Template |
Adobe Systems |
| .lrv |
Low Resolution Video File |
GoPro |
| .lrwebengine |
Photoshop Lightroom Web Gallery File |
Adobe Systems |
| .lrx |
Sony Portable Reader File |
Sony |
| .ls |
LightWave LScript File |
NewTek |
| .ls3 |
Band-in-a-Box Third-Party Styles File |
PG Music |
| .lsd |
RPG Maker Game Save File |
Enterbrain |
| .lsf |
Logos Library System File |
Logos Bible Software |
| .lsl |
LightScribe Label |
Hewlett-Packard |
| .lsn |
Finale Lesson File |
MakeMusic |
| .lso |
Logic Audio Project |
Apple |
| .lsp |
Lisp Program Source Code File |
N/A |
| .lsproj |
Visual Studio LightSwitch Project |
Microsoft |
| .lsr |
LANsurveyor Report |
N/A |
| .lst |
Data List |
N/A |
| .lsu |
LANsurveyor Map |
N/A |
| .lsw |
RPG Maker Saved Game File |
Enterbrain |
| .lsx |
Streaming Media Shortcut |
Microsoft |
| .lt2 |
Poser Light Set File |
Smith Micro |
| .ltf |
Laser App Temp Form File |
Laser App Software |
| .ltg |
LaserTank Graphics File |
JEK Software |
| .ltr |
Letter File |
N/A |
| .ltx |
LaTeX Document |
N/A |
| .ltz |
Compressed Poser Light Set File |
Smith Micro |
| .lua |
Lua Source File |
N/A |
| .lue |
Norton LiveUpdate Log File |
Symantec |
| .luf |
Lipikar Uniform Format File |
Lipikar |
| .lut |
RadioRA Essentials Project Database |
Lutron Electronics |
| .lutx |
RadioRA 2 Essentials Project Database |
Lutron Electronics |
| .luxb |
Lux Map File |
Sillysoft |
| .lva |
Logitech Video Effects Avatar File |
Logitech |
| .lvf |
Logitech Video Effects File |
Logitech |
| .lvivt |
Lvivtotoro Encrypted Game File |
Lvivtotoro |
| .lvl |
Game Level File |
N/A |
| .lvm |
LabVIEW Measurement File |
National Instruments |
| .lvp |
Avaya Voice Player Audio File |
Avaya |
| .lvw |
Livewire Document |
New Wave Concepts |
| .lw4 |
Lightwright File |
John McKernon Software |
| .lwfn |
Adobe Type 1 Mac Font File |
Adobe Systems |
| .lwo |
LightWave 3D Object File |
NewTek |
| .lwp |
Lotus Word Pro Document |
IBM |
| .lws |
LightWave 3D Scene File |
NewTek |
| .lwtp |
LimeWire Theme Pack |
LimeWire |
| .lwv |
Linguistically Enhanced Sound File |
Microsoft |
| .lxa |
Microsoft Speech Lexicon File |
Microsoft |
| .lxcp |
LCARS x32 Color Profile |
LCARS x32 |
| .lxf |
LEGO Digital Designer Model File |
LEGO |
| .lxfml |
LEGO Digital Designer XML File |
LEGO |
| .lxo |
Luxology modo 3D Image |
Luxology |
| .lxsopt |
Liquid XML Studio Project Options File |
Liquid Technologies |
| .lxsproj |
Liquid XML Studio Project File |
Liquid Technologies |
| .ly |
LilyPond File |
GNU |
| .lyc |
bestIMAGE Compressed Design File |
Stork Prints |
| .lyr |
ArcView Layer File |
ESRI |
| .lyt |
Adminsoft Document Layout File |
Adminsoft |
| .lyx |
LyX Document |
LyX |
| .lz |
Lzip Compressed File |
Lzip |
| .lzh |
LZH Compressed File |
N/A |
| .lzm |
Slax Module |
Slax |
| .lzma |
LZMA Compressed File |
N/A |
| .lzo |
LZO Compressed File |
N/A |
| .lzx |
Amiga LZX Compressed File |
N/A |
