Replaces Microsoft Word · Google Docs · Apple Pages
A browser word processor that edits real .docx files, with comments and Track Changes.
Puter Spreadsheet: a free, open-source Microsoft Excel alternative
A fast spreadsheet with an AI assistant, 500+ formulas and charts — saved as real .xlsx files.
- Office
- Free · AGPL-3.0
- Runs in the browser
- No sign-up needed
- alpha
From the official README: this app is in early alpha. Features may change and data could be lost — don’t rely on it for real work yet, and keep copies of anything important.
What is Spreadsheet?
Spreadsheet opens straight into a new sheet with no sign-in. It has the tools you expect from Excel — over 500 functions with autocomplete and plain-language hints, charts that update with your numbers — plus an AI assistant that can add a totals row, write a formula, sort a list or build a chart for you, with one Undo for the whole reply. Files save as standard .xlsx, so they open in Excel, Numbers or LibreOffice.
Key features
- 500+ functions for math, statistics, lookups, dates, text and finance
- Built-in AI assistant: totals, formulas, formatting, sorting and charts
- Column, bar, line, pie, donut, combo, scatter and waterfall charts
- Saves as .xlsx in your own Puter cloud, with version history
- Works on desktop, tablet and phone, in light or dark mode
How to use it
- Open spreadsheet.puter.com in any modern browser — computer, tablet or phone.
- Start right away — no sign-up. Sign in with a free Puter account only if you want to save to the cloud.
- Want to self-host or hack on it? Run it locally (Node.js 22.12 or newer):
git clone https://github.com/HeyPuter/everything.git
cd everything/src/spreadsheet
npm install
npm run devMore office apps
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FAQ
Is Spreadsheet free?
Yes. Spreadsheet is part of the Everything Project and its source code is published on GitHub under the AGPL-3.0 license. There is no subscription or trial.
Do I need to install Spreadsheet?
No. Open spreadsheet.puter.com in the browser on your computer, tablet or phone.
Do I need an account to use Spreadsheet?
Not required. It works straight away and keeps data in your browser or on your device; sign in with a free Puter account to save to the cloud.
Can Spreadsheet replace Microsoft Excel?
Not fully yet. Spreadsheet is in alpha: features will change, and its README asks you not to rely on it for real work or important data. Try it out, and keep backups of anything important.
Summarised from Spreadsheet’s README in the official repository. CraftSuite is an independent, unofficial guide and is not affiliated with Puter; Microsoft Excel, Google Sheets and Apple Numbers are trademarks of their respective owners.