
Microsoft Office Excel
Google Sheets
DB Browser for SQLite
Modern CSV
LibreOffice
Airtable
Apache OpenOffice Calc
100% local, zero uploads. Process millions of rows entirely in your browser. The ultimate privacy-first toolkit for CSV, ecommerce, and marketing data.

Typeform
Survey Monkey
Google Forms
Jotform
Wufoo
Paperform
Qualtrics
Use our drag and drop online form builder for surveys, registrations, payment collections, lead generation and more. Our online forms offer robust features and 50+ integrations that allow you to automate workflows, capture leads & more.

Which is more popular?
Based on our record, Formstack seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | dataprep.dev | formstack.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


The Browser Data Toolkit for Privacy-Conscious Professionals 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...
No description of Formstack yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of dataprep.dev yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Instant SQL on CSV in Browser (DuckDB-Wasm) - Zero Uploads
Formstack Review - Build Payment Forms
More videos
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing dataprep.dev and Formstack.
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.
Share your experience with using dataprep.dev and Formstack. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of dataprep.dev yet. Be the first one to post
From simple contact forms to complex surveys and event registrations, Formstack Forms offers a versatile platform to collect feedback and organize data effectively. This SurveyMonkey alternative provides more advanced...
Formstack emerges as a strong alternative to Survey Monkey, particularly for users who prioritize versatile form-building capabilities, robust integration options, and advanced security features. Its emphasis on data...
Formstack is another documentation tool that eliminates all the paperwork and automates the document creation process. It is a simple document creator that lets you produce different kinds of documents, right from...
Recommendations tracked on public social media and blogs since March 2021.


Tracking dataprep.dev since Jul 2026.
Tired of paying $50 monthly for form mail on your website from https://formstack.com. Source: over 5 years ago
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News. 2017-09-28 - Added PortableApp version of 3. 10. 1. Thanks John.
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