LSP File Extension
Lisp Program Source Code Format
- File Type lsp
- Popularity
- Application Notepad++
- Category Developer Files
- Format Text
What is a LSP file?
Files with the LSP extension are specifically tied to Lisp Program Source Code Format, a Developer Files type, and there are 1166 files in this category.
LSP files are compatible with various operating systems, including Windows, Linux and Mac OS. When working with LSP files, you can rely on 7 programs, including Notepad++, Sublime Text and Atom.
MIME types
- text/x-script.lisp
Programs that support LSP files
How to open a LSP file?
If you can’t open a LSP file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
Notepad++, Sublime Text and Atom are among the most widely used programs for handling LSP files. To install the most up-to-date edition of Notepad++, visit the official Notepad++ Team website. You can download the build that works across all operating systems.
After installing, your OS should instantly open LSP files with Notepad++.
Setting Notepad++ as default LSP viewer
Change the default app for a file type in Mac
- Initiate a right click or use Control + left click on the desired LSP file to open a menu where you can select various actions;
- Choose "Open in Application" and click "Other";
- Look towards the bottom of the window, where you will find the "Enable" menu. "Recommended programs" will be the default selection;
- Choose "All Programs" in this menu and search for Notepad++. Check the box next to "Always open in app" to set it as the default option.
Change default programs in Windows
- Take the first step by right-clicking on your LSP file. Next, select "Open With" and then choose "Choose another app" from the available options;
- Choose Notepad++ from the available applications listed in the pop-up window to set it as the default application to open your LSP file;
- Be sure to check the "Always use this app" checkbox, and then click "OK" to confirm your selection.
Tips and tricks to solve problems with LSP files
Problematic LSP files can usually be resolved by making small changes in your software. See the tips below to help fix common issues.
Are there any techniques or tools available to repair a damaged LSP file?
In a data recovery program, open the damaged LSP file and select the "Repair" menu option. Wait for the recovery process to finish as it will automatically restore the damaged developer files.
How do I know if my LSP file has been damaged?
The signs of corrupted LSP developer files can manifest as:
- Error alerts occur when actions are performed on the file;
- The file shows slow performance when edited in Notepad++;
- The file encounters problems during the opening process or shows error indications;
- An unexplained increase in the size of the LSP file;
- The file causes Notepad++ or other software to hang or crash during various operations;
What factors contribute to Notepad++ crash?
Lack of software updates is a possible reason behind Notepad++ crash. Keep your Notepad++ Team products up to date by installing the latest updates.
Restarting your computer is an essential troubleshooting step that can resolve many common problems. It is recommended to restart your computer before making any changes to the software settings.
How to edit a LSP file?
To modify LSP files, it is necessary to install dedicated software that lets you open and edit developer files. Online LSP editors generally offer fewer tools compared to programs designed for Lisp Program Source Code Format.
Best LSP editors 2026
Based on the specified criteria, here is a list of LSP editors that may fit your requirements.
| LSP Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| TextEdit | Apple | Mac OS | 4.8 out of 5 (40 reviews) |
| Windows Notepad | Microsoft | Windows | 4.8 out of 5 (35 reviews) |
| Gedit | GNOME | Linux | 4.6 out of 5 (38 reviews) |
| Notepad++ | Notepad++ Team | Windows | 4.6 out of 5 (37 reviews) |
| Sublime Text | Sublime HQ Pty | Windows, Mac OS, Linux | 4.6 out of 5 (39 reviews) |
| Adobe ExtendScript | Adobe | Windows | 4.2 out of 5 (35 reviews) |
| Atom | - | Windows, Mac OS, Linux | 4.1 out of 5 (36 reviews) |