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Notepad4 vs Notepad3: catalog facts
Notepad4	Notepad3
Free Free and open source.	Free Free to download and use, with source code published on GitHub.
Windows	Windows
Lightweight and quick to start Syntax highlighting, code folding and auto-completion for many languages	Small memory footprint and fast start Syntax highlighting and code folding
Windows only Single-document design rather than a tabbed or project-based editor	Windows only Far fewer features and plugins than a full IDE
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.