Nought spreadsheet app icon
Early Access

A spreadsheet appthat respects your Mac.

Native Mac. Opens .xlsx in-place. No subscription. No cloud. No 800 MB install.

Heads up: Nought is in early development. It has real features, but rough edges remain. Some workflows you expect from Excel or LibreOffice may not work yet. I ship improvements every week and your feedback shapes what comes next.

Download for Macv1.0.5 - Early access - 3.1 MB

Free. macOS 14+. Apple Silicon and Intel. 12 MB installed. Signed and notarized.

Nought spreadsheet app showing a dashboard with charts and financial data

Spreadsheets shouldn’t need the internet.

I wanted a simple spreadsheet on my Mac. Numbers looks great but mangles .xlsx files on export. Google Sheets wants a browser and a login. LibreOffice works, but feels like it belongs on a different OS.

The only option that opens .xlsx reliably is Excel, and that means a subscription.

So I built Nought. A spreadsheet that feels like a Mac app, because it is one. It opens your .xlsx files, edits them in-place, and never phones home.

Tomasz

Built for Mac

Swift and AppKit. Not wrapped in Electron. Not ported from Linux.

.xlsx in-place

Opens and saves Excel files directly. No import wizard. No export step.

Runs offline

Everything stays on your Mac. No sync. No login. No cloud.

Lightweight

3.1 MB download. 12 MB installed. Opens in under a second.

The only free native Mac spreadsheet
with real .xlsx.

Numbers forces you to export. Google Sheets needs the internet. LibreOffice works, but it’s 800 MB and feels like a different operating system.

Nought opens your .xlsx files directly, edits them, and saves them back. No conversion step. Your colleagues on Excel never know the difference.

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How Nought compares

NoughtGoogle SheetsNumbersLibreOffice
Free
Offline
Mac-native
.xlsx in-place
LightweightN/A
Charts7 types
Functions200+400+250400+

Works with your files

.xlsxExcel
.csvComma-separated
.odsOpenDocument
.pdfPDF export

What makes Nought different

200+ formulas

From SUM and VLOOKUP to NORM.DIST, XMATCH, and TEXTSPLIT. Statistical, financial, engineering, array, and date functions. Autocomplete shows every one as you type.

7 chart types

Bar, line, pie, area, scatter, combo, and waterfall. Interactive tooltips on hover. Charts survive .xlsx round-trip and render in PDF export.

Full formatting

Bold, italic, colors, borders, merge cells, conditional formatting with color scales and data bars, 11 currencies, custom number formats.

Everything else

Sort and filterSingle and multi-column sort. Auto-filter with per-column dropdown arrows
Frozen panesFreeze rows and columns at the current selection. Persisted to .xlsx
Conditional formatting13 rule types including color scales, data bars, and icon sets
Data validationDropdown lists, number ranges, date ranges. In-cell dropdown arrows
Named rangesCreate, edit, and use named ranges in formulas. Workbook and sheet scope
Find and replaceSearch across cells. Replace values one at a time or all at once
Cell styles9 built-in templates: Normal, Heading, Good, Bad, Neutral, and more
Multi-currency11 currencies in the toolbar. Custom currency codes via OOXML bracket syntax
SparklinesMiniature charts inside cells for quick data visualization
Sheet managementAdd, delete, rename, reorder, duplicate, tab colors, hide sheets
Merge cellsMerge and unmerge cells with preserved content and formatting
ZoomScale the entire grid from 25% to 400%. Cmd+Plus, Cmd+Minus, or the slider
Chart round-tripCharts saved to .xlsx open in Excel and vice versa. Full OOXML chart serialization
PDF with chartsExport to PDF with charts rendered inline at their grid position
Interactive chartsHover over chart elements to see values in a tooltip. Series highlighting on hover
AccessibilityVoiceOver labels, keyboard navigation, focus indicators, and reduced-motion support
Engineering functionsDEC2HEX, BIN2DEC, HEX2BIN, OCT2DEC, and all base conversion variants
Statistical functionsNORM.DIST, BINOM.DIST, T.DIST, POISSON, CONFIDENCE, PERCENTRANK, and more
Array functionsVSTACK, HSTACK, WRAPROWS, TOCOL, TOROW, TAKE, DROP, CHOOSECOLS, and MAKEARRAY
Financial functionsSLN, SYD, DB, DDB, PPMT, IPMT, EFFECT, NOMINAL for depreciation and amortization

No subscription. No catch.

A real spreadsheet app that costs nothing. 3.1 MB.

Excel

$99.99

per year (via Microsoft 365)

Google Sheets

Free

but needs internet

Numbers

Free

but no .xlsx in-place

Nought

Free

native, offline, .xlsx

Free. No account needed. No subscription.

Try Nought for free.

Nought is early software. It does not yet cover everything you would expect from a spreadsheet, but it gets better every week. If something feels off, I want to hear about it.

Download for MacShare feedback

Early access - 3 MB download, 12 MB installed. macOS 14 (Sonoma) or later. Apple Silicon and Intel.

Signed and notarized by Apple. Launches instantly.