dataprep.dev
Microsoft Office Excel
Google Sheets
Airtable
Apple Numbers
Pyspread
Apache OpenOffice Calc
Microsoft Office Excel
Google Sheets
Apple Numbers
Zoho Sheet
WPS Spreadsheets
Gnumeric
LibreOffice
dataprep.dev is a 100% local, pure-browser data processing engine designed to solve the biggest headaches in data preparation: Excel crashes and privacy risks.
Powered by cutting-edge DuckDB-Wasm technology, our toolkit brings database-level performance directly into your browser tab. Your data never leaves your device. No servers, no uploads, no GDPR headaches.
Stop fighting with bloated spreadsheet software. Clean locally, analyze anywhere.
dataprep.dev Apache OpenOffice CalcApache OpenOffice Calc is recommended for small businesses, educational institutions, and individual users who require basic spreadsheet capabilities without any cost. It's also suitable for users who prefer using open-source software and do not heavily depend on advanced features or seamless integration with other office tools.
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dataprep.dev's answer
I was trying to clean up a massive, messy Shopify order export. Excel kept freezing, and I absolutely refused to upload sensitive customer emails to random online converters. I got so frustrated that I decided to stop complaining and build a local-first toolkit to solve my own workflow nightmare.
dataprep.dev's answer
1, Indie hackers and solo founders. 2, Boutique digital marketing agencies. 3, Privacy-conscious data freelancers.
dataprep.dev's answer
Most data tools force you to upload your CSVs to their servers. We don't. We compiled DuckDB into WebAssembly, meaning you get a blazing-fast, database-level engine running entirely inside your local browser tab. It's 100% private and works instantly.
dataprep.dev's answer
If you try to open a 2GB CSV in Excel, it freezes and crashes. If you use Python Pandas, you have to write code and manage environments. dataprep.dev gives you the power of code (SQL queries, regex, merging 50 files) with a simple drag-and-drop UI, without ever freezing your computer.
dataprep.dev's answer
E-commerce sellers flattening messy Shopify exports, performance marketers cleaning ad reports, and data analysts who need to anonymize PII (GDPR compliance) before feeding datasets to AI models like ChatGPT.
dataprep.dev's answer
DuckDB-Wasm is the core data engine handling the heavy lifting. The frontend is built with React/Next.js and styled with Tailwind CSS. It's a modern, serverless architecture.
Compared with ALL older versions of software especially both Linux Office tells you what to do instead of performing what you ask for step by step. I often cannot find the way to repair what I did where in Windows this goes fine or is easy to correct. Beside that Open Office is very slow compared with Libre Office and Microsoft is still the fastest.
Microsoft Office Excel - Microsoft Office Excel is a commercial spreadsheet application.
Google Sheets - Synchronizing, online-based word processor, part of Google Drive.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Apple Numbers - Numbers lets you build beautiful spreadsheets on a Mac, iPad, or iPhone โ or on a PC using iWork for iCloud. And itโs compatible with Apple Pencil.
Zoho Sheet - Create and share interactive spreadsheets on the web.
Pyspread - pyspread is a non-traditional spreadsheet application that is based on and written in the programming language Python.