Notepad++ is a free (as in “free speech” and also as in “free beer”) source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GNU General Public License.

Based on the powerful editing component Scintilla, Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size. By optimizing as many routines as possible without losing user friendliness, Notepad++ is trying to reduce the world carbon dioxide emissions. When using less CPU power, the PC can throttle down and reduce power consumption, resulting in a greener environment.

Notepad++ v8.9.3 regression fixes, bug-fixes & new improvements:**

Regression fix: a crash in User Defined Language. (Fix #17520)
Regression fix: installing (or removing) plugin re-opens Notepad++ with permanent admin privilege (Fix #17540)
Regression-fix: wrongly added parenthesis for some multi-bytes characters. (Fix #17521, #17802)
Regression-fix: incorrect function list text display for non-UTF8 documents. (Fix #17847)
Regression-fix: ProjectPanel Workspace text localization issue. (Fix community report)
Regression-fix: Change History margin not enabled by default. (Fix comment repport)
Regression-fix: Notepad++ update & plugin download fail behind corporate MITM proxies. (Fix community report)
Security enhancement: Update cURL to v8.19.0 in auto-updater (WinGUp) to fix cURL security issue (CVE-2025-14819). (Fix #17869)
Improve performance by migrating the XML parser from TinyXML to pugixml. (Fix #16175)
Update Scintilla to 5.6.0 & Lexilla to 5.4.7. (Implement #17562)
Fix the issue where printing caused Notepad++ to crash. (Fix #6126, #12645, community report #1, community report #2, community report #3)
Fix Find in Files failing to search file content on disk. (Fix #16177, #17070)
Add disableNppAutoUpdate.xml to disable auto-update when WinGUp (GUP.exe) is present. (Implement #17836)
Fix a memory leak on exit. (Fix #17817)
Fix installed auto-completion files not overwritten after update. (Fix #14749)
Add model capacity of shortcuts.xml & contexMenu.xml for administration. (Fix #17872)
Add an option to disable selected text drag-and-drop. (Fix #2571, #11335)
Fix wrong theme-writing path for non-ProgramFiles installations. (Fix comment repport)
Enhancement: prevent XML config files from being overwritten when updating portable package (copy/paste). (Fix #9755, #14279, #15120)
Fix incomplete Find dialg tab translation when 1st opêned from Project Panels. (Fix community report)
Fix Notepad++ spawning a new Windows Explorer process in Task Manager. (Fix comment repport)
Add Function List & Autocompletion for D language. (Fix #17349)

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