Opens huge documents without drama.
Our large-file engine keeps a three-hundred-megabyte log as quick to scroll, search and edit as a short note. It all happens on your Mac.
The text and code editor for Mac
The speed and directness of a classic power editor, rebuilt as a true native Mac app — it opens instantly, shrugs at enormous files, and quietly refuses to lose your work.
Create a new file or open an existing one.
New FileOpen…
⚡ See What's InsideWalk Me Through the Toolbar
Tip: Drag & drop files here · ⌘O to Open · ⌘N for New
Walk Me Through the Toolbar
The Bar 1 of 21
Welcome to Note My
Everything starts at the top
The toolbar is the whole app in one row. Here is every control in it, one at a time — what it does, and what it doesn’t.
- Press any button above to jump straight to it
- Or sit back — this advances on its own
Each button in the toolbar lights up in turn, from left to right.
Read the guideThe Bar 2 of 21
Note My
Know where you are
The bar starts with the app’s name and the file you’re in. The path is a link — click it and the Finder opens with that file selected.
- Click the path to reveal the file in the Finder
- Point at it to see the full path
- A document you haven’t saved yet shows no path — its name is on its tab
- While comparing, both files are shown side by side
The pointer rests on the file path, the full path appears, and a Finder window opens with the file selected.
Read the guideFiles 3 of 21
New
Start something empty
Opens an untitled document in a new tab. No file appears in the Finder until you save — but the app starts keeping a private copy from your first keystroke, so an unexpected quit doesn’t cost you the work.
- ⌘N
- Autosaved privately as you type, and offered back on the next launch
- Nothing lands in the Finder until you save it yourself
- Takes your default encoding and line ending from Settings
A fourth tab slides into the strip and becomes selected, the page empties, and the autosave indicator confirms the work is already being kept.
Read the guideFiles 4 of 21
Templates
Begin from a pattern
Opens a menu of ready-made files, grouped by kind — and the same menu saves the current document as a template or inserts a smart token.
- Opens a menu of choices
- Save Current Document as Template…
- Insert Smart Token — {{YEAR}}, {{DATE}}, {{AUTHOR}}
The menu opens, a template is chosen, and a new tab appears already filled in with its contents.
Read the guideFiles 5 of 21
Open
Bring in a file
Opens files from disk. You can select more than one, and each arrives in its own tab.
- ⌘O
- Select several at once
An open panel drops down, two files are selected, and both appear as new tabs.
Read the guideFiles 6 of 21
Save
Commit this tab
Writes the tab you’re looking at. Other tabs with unsaved changes keep them — this saves one document, not all of them.
- ⌘S
- Only the active tab — the others are left exactly as they were.
- The orange dot on a tab means the file changed on disk, not that it is unsaved
The active tab is written to disk and confirms; the other two tabs are untouched.
Read the guideFiles 7 of 21
Save As
Keep a separate copy
Saves the active tab under a new name or place, and the tab then follows the new file. The chevron carries the rest of the save family.
- ⇧⌘S
- Save · Save a Copy As… ⌥⇧⌘S · Rename File…
- Reload from Disk · Reveal in Finder
A save panel appears with a new name; the tab’s title changes to match it.
Read the guideLayout 8 of 21
Multi View
See every tab at once
Gives each open tab its own pane, side by side, each aligned under its tab.
- It does not split the current file — every pane holds a different tab.
The single page divides into three panes, one for each open tab.
Read the guideLayout 9 of 21
Single View
Back to one page
Collapses the panes back to a single view showing the tab you had selected.
- The other panes slide away; the selected one stays
Three panes slide outward and the selected one expands to fill the window.
Read the guideLayout 10 of 21
Compare
See what changed
Puts two documents side by side and marks every line that differs.
- Opens a menu of choices
- Compare Files… — pick the pair yourself
- Quick Compare — straight in when two tabs are open
- Hold Shift and scroll to move both together
- Escape leaves compare mode
Two panes appear and the differing lines light up; holding Shift and scrolling moves both documents in step.
Read the guideFind & Go 11 of 21
Find & Replace
Change it everywhere
Opens Find and Replace for the active tab — with case, whole-word and regular-expression matching, and a replace that can sweep every file you have open.
- Case · Whole word · Regular expression
- Replace All in All Files covers every open tab
- Bookmark All marks every match
The pop-over opens, matches light up through the document, and replacing turns each of them green.
Read the guideFind & Go 12 of 21
Go to Line
Jump straight there
Asks for a line number and takes you to it. The field arrives already holding the line you’re on — selected, so typing replaces it — which means it answers “where am I?” as well.
- ⌘L
- Pre-filled with your current line, and selected
- Out-of-range numbers are refused, not clamped
A sheet asks for a line number; the view scrolls to it and the line flashes before settling.
Read the guideAutomate 13 of 21
Macros
Record once, repeat
Records what you type and edit, then plays it back — once, a set number of times, or saved and reused later.
- The button fills red while recording
- Play Macro… · Play Multiple Times…
- Save Macro… keeps it for next time
The button turns red and counts actions as they are recorded, then playback applies them line by line.
Read the guideText & View 14 of 21
Wrap
Keep long lines in view
Folds lines that run past the window instead of scrolling sideways. It’s one setting shared by every pane.
- Applies to every pane, on screen or not
Two long lines fold into several shorter ones and the horizontal scroller disappears.
Read the guideText & View 15 of 21
Show Invisibles
See the spaces you can’t
Reveals spaces, tabs and line endings in one press — markers and underline together.
- It changes how text is drawn, never the file itself.
- Finer control lives in Settings ▸ Invisibles
Dots appear in every space, arrows in every tab, and a return glyph at the end of each line.
Read the guideText & View 16 of 21
Clean
Strip what shouldn’t be there
Removes invisible and pasted-in junk characters. Unlike Show Invisibles, this one edits the document — and every pass can be undone.
- Opens a menu of choices
- Clean AI Copy/Paste Markers
- Find Next Hidden Character ⌥⌘G
- Undoable
Zero-width characters glow along a line and then vanish, and the line closes up.
Read the guideText & View 17 of 21
Indent
Line the code up
Opens the indentation sheet, where you choose the language and whether to re-indent the whole document or just what you’ve selected. It unpacks statements sharing a line as well as fixing the indent.
- It opens a sheet first — nothing changes until you apply it.
- Whole document, or the selection only
- Tabs or spaces and your width, with language-aware rules
Flat, crammed code with no indentation at all unpacks onto separate lines, then slides out to its proper indent.
Read the guideText & View 18 of 21
Guides
Follow the nesting
Marks each level of indentation so a deep block stays readable — in any of ten styles, from a quiet dotted rhythm to a color per level.
- Ten styles: Dots · Color Dots · Dashed · Thin · Medium · Thick · Rail · Beam · Accent · Spectrum
- Chosen in Settings ▸ Guides
Guides fade in down the indented block, then every available style is shown in turn, named.
Read the guideText & View 19 of 21
Smart Edit
Indent as you type
Carries your indentation onto the next line, closes brackets and quotes as you open them, and finishes HTML tags.
- Return keeps your depth and opens a scope after { [ (
- Bracket and quote pairs close themselves
- Type > and the matching closing tag appears
A brace is typed, its partner appears below, and the new line between them lands already indented.
Read the guideThe App 20 of 21
Settings
Make it yours
Opens Settings — fourteen pages down a sidebar, covering the editor, suggestions, guides, ruler, invisibles, encoding, backup and more.
- ⌘,
- Search finds any setting by name
The Settings window opens and its sidebar fills in.
Read the guideThe App 21 of 21
That’s the bar
You know where everything lives
Every one of these is also in the menus, with its keyboard shortcut beside it. You can walk through this again whenever you like.
- Help ▸ Walk Me Through the Toolbar
- Settings ▸ for everything the bar doesn’t show
The whole toolbar brightens back to normal.
Read the guideGet to know Note My.
…08114:02:11.048 203.0.113.7 GET /api/v2/sync 200 12 ms
…08214:02:11.052 198.51.100.23 GET /api/v2/state 200 9 ms
…08314:02:11.201 203.0.113.7 POST /api/v2/commit 201 44 ms
…084WARN queue depth rising — 1 208 pending
…08514:02:12.114 192.0.2.41 GET /api/v2/manifest 500 310 ms
…08614:02:12.119 203.0.113.7 GET /api/v2/sync 200 11 ms
…08714:02:12.500 198.51.100.23 GET /healthz 200 2 ms
…08814:02:12.740 203.0.113.9 GET /api/v2/sync 200 10 ms
…08914:02:12.981 198.51.100.4 PUT /api/v2/flag 204 6 ms
…090WARN cache miss ratio 0.41
…09114:02:13.204 192.0.2.41 GET /api/v2/manifest 200 38 ms
…09214:02:13.377 203.0.113.7 GET /healthz 200 2 ms
…09314:02:13.590 198.51.100.23 GET /api/v2/state 200 8 ms
…09414:02:13.734 203.0.113.9 POST /api/v2/commit 201 39 ms
…09514:02:11.048 203.0.113.7 GET /api/v2/sync 200 12 ms
…09614:02:11.052 198.51.100.23 GET /api/v2/state 200 9 ms
…09714:02:11.201 203.0.113.7 POST /api/v2/commit 201 44 ms
…098WARN queue depth rising — 1 208 pending
…09914:02:12.114 192.0.2.41 GET /api/v2/manifest 500 310 ms
…10014:02:12.119 203.0.113.7 GET /api/v2/sync 200 11 ms
Chars 326 004 118
Lines 2 004 111
Aa UTF-8
Plain Text
Invoice.swift
Report.swift
Ledger.swift
1struct Invoice {
2 let id: UUID
3 let total: Decimal
4
5 func format() -> String {
6 let fmt = NumberFormatter()
7 fmt.numberStyle = .currency
8 return fmt.string(from: total)
Chars 214
Lines 10
{} Swift
ideas.txt
deploy.sh
Untitled 4
1Three unsaved documents. A build running.
2And then—
Your last session got interrupted.
Your work is in the safety net.
Restore
ideas.txt
deploy.sh
Untitled 4
1Three unsaved documents. A build running.
2And then — nothing happened at all.
Nothing lost — not even the unsaved
Invoice.swift
1struct Invoice {
2 let id: UUID
3 let total: Decimal
4
5 func format() -> String {
6 let fmt = NumberFormatter()
Report.swift
1struct Report {
2 let rows: [Row]
3 var sum: Decimal
4
5 func tally()
Ledger.swift
1struct Ledger {
2 let entries: [Entry]
3 let opened: Date
One pane per tab — not a split of this file
Invoice.swift
1struct Invoice {
2 let id: UUID
3 let total: Decimal
4
5 func format() {
6 let fmt = NumberFormatter()
7 return fmt.string(from: total)
8 }
9
10 func describe() -> String {
11 return "Invoice"
12 }
13}
Invoice-v2.swift
1struct Invoice {
2 let id: String
3 let total: Decimal
4
5 func format(_ l: Locale) {
6 let fmt = NumberFormatter()
7 fmt.locale = l
8 }
9
10 func describe(_ l: Locale) -> String {
11 return "Invoice"
12 }
13}
⇅ Parallel scroll — hold Shift to mirror scroll
⇄ 4 differing lines
AirDrop
Recents
Applications
Sources
Documents
Downloads
Invoice.swift
Ledger.swift
Report.swift
Notes.md
access.log
…30205:41:22 node-02 tests pass 2 126 / 2 126
…30305:41:22 node-07 fetch ok resumed
…30405:41:23 node-12 cache ok 166 ms
…30505:41:24 node-03 compile ok target x86_64 — 416 units
…30605:41:24 node-09 archive ok artifacts stored
…30705:41:25 node-01 link ok 678 s
…30805:41:26 node-05 compile ok target aarch64 — 61 units
…30905:41:26 node-11 retry flaky fetch, attempt 2
…31005:41:27 node-02 tests pass 1 096 / 1 096
…31105:41:28 node-07 fetch ok resumed
…31205:41:28 node-12 cache ok 852 ms
…31305:41:29 node-03 compile ok target x86_64 — 560 units
…31405:41:30 node-09 archive ok artifacts stored
…31505:41:30 node-01 link ok 108 s
…31605:41:31 node-05 compile ok target aarch64 — 386 units
…31705:41:32 node-11 retry flaky fetch, attempt 2
…31805:41:32 node-02 tests pass 3 187 / 3 187
…31905:41:33 node-07 fetch ok resumed
…32005:41:34 node-12 cache ok 71 ms
…32105:41:34 node-03 compile ok target x86_64 — 531 units
…32205:41:35 node-09 archive ok artifacts stored
…32305:41:36 node-01 link ok 231 s
…32405:41:36 node-05 compile ok target aarch64 — 50 units
…32505:41:37 node-11 retry flaky fetch, attempt 2
…32605:41:22 node-02 tests pass 2 126 / 2 126
…32705:41:22 node-07 fetch ok resumed
…32805:41:23 node-12 cache ok 166 ms
…32905:41:24 node-03 compile ok target x86_64 — 416 units
…33005:41:24 node-09 archive ok artifacts stored
…33105:41:25 node-01 link ok 678 s
Chars 4 293 021 118
Lines 38 402 776
✓ Clean
↵ LF
Aa UTF-8
Plain Text
Big Files
Big files. No fear.
Most editors demo beautifully on two hundred lines and fall over on a real log. Note My is designed the other way around: the multi-megabyte file is the normal case. Open it, scroll it, search it, edit it — while the rest of your Mac stays bored.
Typing stays instant.
Syntax colouring, line counting, and the status bar are engineered so a keystroke costs the same in a two-million-character document as in an empty one.
Paste anything.
Drop in a whole log dump and keep working. The window stays responsive however much is on the clipboard.
Memory stays flat.
Open a giant file, close its tab, and the memory comes back. Watch a growing log for hours and the footprint doesn't creep.
Follow Tail.
Pin the editor to the end of a growing file and watch lines arrive — in a real editor with real search, not a terminal. Scroll up and it lets go; scroll back and it resumes.
Logs light up.
Severity levels get their own colours, HTTP status codes go green-to-red, IPs and UUIDs stand out. A wall of text becomes a page you can scan — and following a multi-gigabyte log costs the same as a tiny one.
The Editor
Colour between the lines.
Swift, Python, JavaScript, TypeScript, Java, C, C++, Ruby, HTML, CSS, PHP, Rust, Go, Kotlin, and Shell — fifteen languages, coloured beautifully. Paste code into an empty document and Note My recognises the language and offers to set it — one click, in the corner, and it never interrupts.
Suggestions that respect you.
Completions drawn from the language's keywords, the symbols already in your document, file paths, and your own accepted habits — with call tips and tab-through placeholders. Every source can be switched off. Nothing types for you unless you ask it to.
Code folding.
Collapse the block between brackets and see the shape of the file.
Select a word, see it everywhere.
Double-click highlights every occurrence in the document, with a live count in the status bar.
Find, everywhere.
Find & Replace in a light popover that appears where you're looking. Find in Folder searches a whole directory tree, results grouped by file. Go to Line, for when a compiler hands you a number.
JSON and XML, handled here.
Format, minify, and validate JSON; format XML — right from the Edit menu. No online formatter, no pasting your data into a website.
Do it again, automatically.
Record edits, navigation, and replacements as a macro — replay it once or hundreds of times across a scope you choose, and get a report of what happened. If an action can't be recorded, it says so at record time, not silently at playback.
Re-indent, previewed live.
What actually arrives on a paste: no indentation at all, and more than one statement crammed onto a line.
Pick the style, watch it reshape — nothing changes until you commit. It even repairs comments damaged by earlier bad formatting, and every while-you-type assist is individually yours to silence.
The Safety Net
Crash. Relaunch. Nothing lost.
The feature you buy an editor for and hope never to notice. Note My assumes the worst — crash, force-quit, power cut, an overwritten file — and makes it boring.
Autosave for work you never saved.
Untitled scratch tabs, edits you haven't committed — all quietly protected as you type. Quit and relaunch: your tabs come back exactly as they were, stars and all.
Crash recovery that just works.
If the app ends badly, the next launch restores what you were doing. Our auto-recovery safety net keeps your drafts sealed and private on your own Mac, so a shared machine never exposes them.
Backups on save.
Save over something and the version you replaced is still there, ready to bring back. Your earlier drafts stay on your Mac, tidied up on a schedule you set.
Your work, kept as you type.
Our auto-recovery safety net looks after every open document, including the ones you have not named yet — on a schedule you control.
The file changed behind your back?
Note My watches your open files. If a build script or a colleague changes one, you choose: reload it, or Keep My Version — your copy instantly becomes the one that counts, protected until you decide.
Deleted from disk?
You're told — once, calmly — and your buffer becomes the safe copy. Nothing vanishes because a file did.
Workspace
Your desk, your rules.
Pin tabs, drag them into order, rename them inline, act in bulk. Split the window into panes and pour different tabs into them. Your session is sacred — tabs, order, selection, all restored on launch, every launch.
Tabs that behave like a power tool.
Pin them, reorder them by dragging, resize them, rename inline with a double-click. A rich right-click menu puts save, duplicate, compare, and reveal one gesture away.
Split the window.
Two, three panes side by side, each with its own tab. Compare notes with code; keep the log next to the fix.
A pairing canvas, not a dialog.
Compare Files opens a canvas where you draw connections between tabs — pair A with B, C with D — and run them together. Quick Compare when you just want this one against that one.
Differences painted in place.
An inspector walks change by change, and parallel scrolling keeps both sides aligned as you read. Comparisons stay responsive even when both sides are thousands of lines.
Start your way.
When there's nothing to restore, you decide what a fresh launch shows: the welcome screen, an empty document, or a page ready for you to paste into. Forty templates fill in date, file name, and author as the file is born. (Note My never reads your clipboard.)
Drag anything in.
Drop files from Finder onto the tab bar and they're open.
Clean Text
See the invisible.
The feature you didn't know you needed until the day an invisible character broke your build. Text pasted from chatbots arrives with invisible watermark characters and typographic substitutions — one command strips the markers and normalises the text.
A cleaner for what you can't see.
Zero-width spaces, stray directional marks, non-breaking spaces masquerading as spaces, smart quotes where straight ones belong — Note My finds them, shows them, and removes them.
It never touches your code blindly.
The cleaner understands the difference between prose and source — strings and comments are handled with care, and if it can't tell what a region is, it protects it. Your typed characters are never rewritten behind your back.
A live pill in the status bar.
It counts what's lurking in the current document. A click shows the findings, a second click cleans them — or review everything in a sheet first, or set it to clean pasted text automatically.
Show every character.
Render spaces, tabs, and line endings in three styles; pick from ten styles of indentation guides and four rulers — the look that reads best to you.
Your rules, too.
Add your own removal patterns to the built-in set.
Fair questions.
Files that make other editors beach-ball simply appear, ready to scroll, search, and edit. Typing costs the same in a two-million-character document as in an empty one, and following a growing multi-gigabyte log costs the same as a tiny one — only the new lines are read.
Swift, Python, JavaScript, TypeScript, Java, C, C++, Ruby, HTML, CSS, PHP, Rust, Go, Kotlin, and Shell — plus Plain Text for prose and a Custom mode for everything else. A Language Inspector shows exactly what the editor detected and why, and you can override it in one click.
Note My contains no networking code of its own; the only network activity is performed by Apple’s own system services, to establish purchases and transactions state. No account, no signup, no telemetry, no analytics, no crash reporting. It's fully sandboxed and touches only the files you open. Nothing about you or your files leaves your Mac.
Handled like an adult: eighteen encodings with confident detection, byte-order-mark control, mixed line-ending warnings, and per-document conversion between LF, CRLF, and CR. And when the Mac insists a file isn't text, Open Anything as Text forces the door open.
Properly. Print with line numbers, headers, and footers; export as HTML, RTF, or PDF with the syntax colouring intact; or copy styled code straight into documents and decks. There's also a Finder right-click menu to open files, open a whole folder, or compare two selected files.
Minutes. A short, handsome, animated welcome introduces the app the first time, and Walk Me Through the Toolbar points at the real toolbar, explaining each control in place — the tour is tested against the actual app, so it can never describe a button that doesn't exist. VoiceOver labels and Reduce Motion are respected everywhere, including the fanciest animations.