Notesipper is the simplest possible plain-text editor for macOS — and nothing more
Notesipper is the simplest possible plain-text editor for macOS — and nothing more.
Open. Type. Save. (Or don't.)
That's the whole thing.
THE CLASSICS, ALL HERE
• File: New, Open, Open Recent, Save, Save As, Page Setup, Print
• Edit: Undo / Redo, Cut / Copy / Paste, Find, Find Next / Previous, Replace, Go To Line, Time/Date insertion (F5)
• Format: Word Wrap toggle, Font picker
• View: Zoom In / Out / Restore (⌘+ / ⌘− / ⌘0), live Status Bar — line, column, word & character count, encoding, line endings
A FEW MODERN TOUCHES (still no clutter)
• Native macOS tabs — open many documents in one window; drag a file onto a window to open it as a new tab.
• Transform menu — UPPERCASE / lowercase / Capitalize, Trim Trailing Whitespace, Remove Empty Lines.
• Duplicate Line (⌘D) and Move Line Up / Down (⌃⌘↑ / ⌃⌘↓).
• Regex Find & Replace — flip the Regex checkbox for full pattern matching.
• macOS Versions — saved documents get Revert To → Browse All Versions.
• Float on Top — pin a window above everything else for quick jotting.
THE TEXT FILES YOU ACTUALLY OPEN
Notesipper registers as a handler for plain-text and source-code files: .txt, .log, .md, .ini, .csv, .conf, .yaml, .toml, .json, .html, .css, .swift, .py, .rb, .js, .sh — 80+ extensions in total. Right-click any file in Finder → Open With → Notesipper.
ENCODING & LINE ENDINGS, DONE RIGHT
• Encoding picker on Save As: UTF-8, UTF-8 with BOM, UTF-16 LE/BE, Windows-1252 (ANSI), Mac Roman.
• Auto-detection on Open via BOM and content sniffing.
• Line endings preserved: open a CRLF file, save it back as CRLF. LF stays LF. CR stays CR.
BIG-FILE SAFE
Memory-mapped reads. Files up to 100 MB open instantly. Files 100 MB – 1 GB prompt for confirmation. Files larger than 1 GB are politely refused. The editor never freezes.
PRIVACY BY DESIGN
• App-sandboxed.
• No network entitlement of any kind. The app cannot open a socket.
• No analytics, no telemetry, no crash reporter, no third-party SDKs.
• Your text never leaves your Mac unless you save or share it yourself.
WHAT NOTESIPPER DELIBERATELY DOESN'T DO
• No markdown preview, syntax highlighting, or themes.
• No AI suggestions, autocomplete, or spell-fixing.
• No plugins, scripting, or settings sync.
• If you want any of that, use a different editor. Notesipper is for quick sips.
ONE-TIME PURCHASE — $9.99. No subscriptions, no upgrade fees, no in-app purchases, ever.
System requirements: macOS 12 Monterey or later. Universal (Apple Silicon and Intel).
Website: notesipper.com
Support: [email protected]