Lake3Tools CSV Compare desktop app
Compare CSV files with 10s of millions of rows in seconds.
What it does
Compare massive CSV files in seconds, even with mismatched or missing headers. No cloud uploads, accounts, or subscriptions. Lifetime license with no artificial limits — your data stays fully local. Handles tens of millions of rows with a simple, user-friendly interface. Just download, unzip, and run. Free 3-day trial included — no card required.
Does the same job
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- STSmoothCSV – The Ultimate CSV Editor2025 · smoothcsv.com · ▲5
Hey HN! I've been building CSV editors for 15 years. This is my third rewrite, and I think I finally got it right. Key features: - Excel-like operation for intuitive use - Equipped with basic to advanced tools necessary for handling CSV - Supports various formats and character encodings. Can handle CSVs with different column counts - Cross-platform (Windows/Mac, Linux coming soon) - Opens 100MB files in 1.6 seconds (12x faster than Excel) Tech stack: Tauri (Rust + React/TypeScript/TailwindCSS) Would love feedback from anyone dealing with large datasets daily! Website:…
- A1Analyse 1M rows of CSV on deviceJan 2026 · app.statpecker.com · ▲6
Hello HN, Wish you a very Happy New Year. StatPecker is our baby project. A cute little infographics generation tool for anybody seeking insights. We recently dropped a new feature, to help user upload CSV upto 50mb or in other words data with ~1 million rows. We wanted to make sure user data doesn’t get leaked, so we developed a mechanism where the CSV is analysed on user’s device. We only use our AI APIs to generate SQL queries on the fly and query the DB on user’s machine, along with the final response for aggregated data. The result turns out to be quite fast. Would love you to try it out.
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Hey HN! I wanted to share something I built over the last few weeks: isometric.nyc is a massive isometric pixel art map of NYC, built with nano banana and coding agents. I didn't write a single line of code. Of course no-code doesn't mean no-engineering. This project took a lot more manual labor than I'd hoped! I wrote a deep dive on the workflow and some thoughts about the future of AI coding and creativity: http://cannoneyed.com/projects/isometric-nyc
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