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Dev tools · July 1, 2025

SmoothCSV

Hi HN, I'm kohii, a software engineer from Japan. I've been building CSV editors for 15 years. This is my third rewrite from scratch, built with Tauri, Rust, and web technologies. *Why I built this:* Modern dev tools, that I use daily, are incredibly polished. CSV editors, not so much. I wanted a tool that handles CSVs as they are (messy column counts, various encodings, any delimiter or quoting style), preserves the original format, and gives you a polished spreadsheet UI with thoughtful UX. *What SmoothCSV does:* - *Fast*: Opens 100MB files in 1.6 seconds. (12x faster than Excel) -…

SmoothCSV launched on July 1, 2025 with 11 votes, #1,852 of 9,223 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.

What it does

SmoothCSV is a cross-platform CSV editor built for real work. Edit your files intuitively, exactly how you want. Lightning-fast performance, handles messy data, and powerful features like SQL queries. Just smooth CSV editing that works.

SmoothCSV is the ultimate CSV editor for macOS, Windows, and Linux — open huge files in seconds and edit with a familiar spreadsheet UI.

SmoothCSV is a powerful and intuitive tool for editing CSV files. Edit your CSV files with an intuitive spreadsheet-like interface. a]:text-link [&>a]:hover:underline" data-astro-cid-3lpecwmo> Find and replace text, sort and filter data, run SQL queries, multi-cell editing, and much more. The command palette gives you quick access to everything. View all features → Download SmoothCSV today and start editing your CSV files with ease. I'm a full-stack developer, crafting SmoothCSV in my spare time. a]:text-link [&>a]:hover:underline" data-astro-cid-3lpecwmo> If you like SmoothCSV, feel free to share it on X about it, star the repository on GitHub , get a SmoothCSV License , or buy me a coffee…from smoothcsv.com

In the maker’s words, at launch

Hi HN, I'm kohii, a software engineer from Japan. I've been building CSV editors for 15 years. This is my third rewrite from scratch, built with Tauri, Rust, and web technologies. *Why I built this:* Modern dev tools, that I use daily, are incredibly polished. CSV editors, not so much. I wanted a tool that handles…

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