Nought spreadsheet app icon
v1.0

A spreadsheet appthat respects your Mac.

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

Download for Macv1.0 - 2.9 MB

Free. macOS 14+. Apple Silicon. 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

2.9 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
Functions126+400+250400+

Works with your files

.xlsxExcel
.csvComma-separated
.odsOpenDocument
.pdfPDF export

What makes Nought different

126+ formulas

SUM, VLOOKUP, IF, INDEX/MATCH, COUNTIF, and more. Autocomplete shows every function as you type.

7 chart types

Bar, line, pie, area, scatter, combo, and waterfall. Insert into your spreadsheet. Drag to move and resize.

Full formatting

Bold, italic, colors, borders, merge cells, conditional formatting, 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

No subscription. No catch.

A real spreadsheet app that costs nothing. 2.9 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 covers 90% of what casual spreadsheet users need, and it gets better every week. If something feels off, I want to hear about it.

Download for MacShare feedback

Version 1.0 - 2.9 MB download, 12 MB installed. macOS 14 (Sonoma) or later.

Signed and notarized by Apple. Launches instantly.