LSL Alternate Editors/es

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There are several off-world editors available for free or purchase. Some have syntax highlighting for LSL that will make your code easier to follow. One will compile and execute a large subset of LSL. Below are some of the more popular editors for use with LSL.

If you have a favorite that is missing from the list, please feel free to add it.

Off-world syntax checker

You can build a syntax checker yourself and hook it into whatever editor you fancy if you have the viewer source installed and compiled on your machine. The C++ source to build one yourself is here (JB Kraft).

Off-world edit and execute

This is heaven. Not only see if your syntax is correct, but actually execute your scripts in an off-world test environment. See multiple scripts send messages to one another, find concurrency bugs, test your list parsing routines.


LSL-Editor for Windows is a standalone LSL script editor, compiler and debugger. Binary code only (not open source).

It is the only off-world editor that also has a script execution run-time.

Its compiler and debugger are already now reasonably accurate, but yet quite totally perfect. Please blog any LSL-Editor bugs you find into such places as our LSL-Editor Bugs article.

Multi-platform Editors

ByronStar SL

Based on Eclipse, the ByronStar SL IDE includes most modern program editor features. It also includes custom features for LSL, such as variable checking, error markers, and code formatting. Eclipse is available for Macintosh, Linux, Windows, and many UNIX flavors.


There's an Emacs LSL Mode available on this wiki, which provides syntax highlighting and indentation features. If you want some tips on writing LSL in emacs, read Xah Lee's page. Emacs is available for many Unix flavors, Macintosh and Windows.

You may come across (and attempt to use) Gary Evan's LSL major mode. It won't work with the Linden Scripting Language, as Gary wrote it for the Larch Shared Language.


vim: vi improved. A multi-platform evolution of the most classical of the editors: vi. GPL code.
Plugins for VIM for install the syntax, autocompletion, autoident for LSL script into vim


Easy to use, features syntax highlighting, folding, auto complete, help that opens the appropriate wiki page, and is setup to use the c preprocessor, and lslint.
Windows only SciTE-ez
Files for Linux or Windows Forum thread scite_lsl.tar.gz


Developed in Java, this mature, cross-platform editor runs on any operating system with a Java 2 version 1.3 or higher virtual machine. It has all the features you'd expect from a full-GUI text editor. Syntax highlighting and tailored editing behavior is supported through "modes." (You can get the LSL 'modes' file here.) The editor supports a rich plug-in API; many third-party plug-ins exist to facility editing, formatting, communications, etc.
You can find jEdit here.

Windows Editors


Notepad++ is probably one of the best Windows editor around. Packed with features, extremely powerful and easy to use for beginners too. Best of all, it is GPL code.


ConTEXT is a small, fast and powerful freeware text editor, developed mainly to serve as secondary tool for software developers.

The following syntax files are available for ConTEXT.

Crimson Editor

Crimson Editor is a professional source code editor for Windows. The following syntax files are available for Crimson Editor.

  • Aakanaar Last updated September 10, 2006 for Second Life version 1.10.0.


LSL-Editor is a standalone Windows LSL editor, compiler and debugger. All the usual editing, plus you can compile and execute.

TextPad [C]

TextPad is a powerful, but easy to use general purpose text editor. It is a commercial product, but there is a 30 day trial version available for free on the website.

The following syntax files are available for TextPad.

UltraEdit-32 [C]

UltraEdit-32 is a powerful text, HTML, and HEX editor. It is a commercial editor with a 30 day trial version available at the website. Important features:

  • column/block mode editing
  • brackets/braces matching
  • code-folding
  • configurable syntax highlighting via custom wordfiles
  • autocomplete (using keywords defined in the wordfile)
  • bookmarks, incremental searching, CTAG support
  • automatic conversion between Unix/Dos/MAC/UTF-8, etc
  • built-in FTP/SFTP client

The following syntax files are available for UltraEdit.

Macintosh Editors

TextMate [C]

You can find details about Piero Padar's well-maintained TextMate bundle in the Scripting Tips forum. TextMate is a commercial Mac OS X text/program editor from Macromates.

There is a 30 day trial version available on their website.

SubEthaEdit [C]

This a great text editor with extensible language support. It also happens to be an incredible collaborative editor. Info at:

There is a contributed LSL mode by Zarf Vantongerloo. The mode is a little out of date and could use some love. But in general works great, doing syntax hilighting of LSL funcitons and adding a pop-up menu of all functions, states and event handlers to the top of the window.

An updated LSL mode by Mark Lentczner is available now from the SubEthaEditor User contributed modes Repository.

BBEdit and TextWrangler

You can get a LSL language module for BBEdit and TextWrangler at

Linux Editors

Kate is an advanced text editor for KDE. Usually included in all KDE based distributions. A Kate LSL Mode is available on this wiki.