CSV Tools Online
Powerful data tools. No coding.
CSV Tools Online launched on June 16, 2025 with 13 votes, #1,425 of 7,999 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
All-in-one, privacy-first data toolkit to query, join, visualize & model CSV/Excel/JSON files — all in-browser. Run SQL, build ML models, pivot tables, charts & more. No signup, no upload — just instant tools for devs, analysts & data lovers.
Convert, clean, merge, split & analyze CSV files online — free, instant, and 100% browser-based. 90+ tools including CSV to Excel, JSON, SQL, XML. No signup required. Your data never leaves your device.
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More growth this month
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Source: Product Hunt launch ↗
Launched alongside, June 2025
the whole month →- IM
Hey HN! Pilots everywhere are required to keep a logbook of all their flying hours, aircraft, airports, and so on. Since I track everything digitally (some people still just use paper logbooks!), I put together some data visualizations and a few 3D globes to show my flying history. This globe is probably my favourite so far: https://jameshard.ing/pilot/globes/all If you’ve got ideas for other graphs or ways to show this kind of data, I’d love to hear them!
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I was the main contributor to workout.lol, an open-source fitness app to easily build a workout routine. The project had traction (1.4k GitHub stars, 95 forks, ~20K visits/month), but was eventually sold due to video licensing hurdles. The new owner stopped maintaining it, and the repo went abandoned. Over the next 9 months, I sent 15 emails to try to save it : no replies. Feature requests & issues were ignored. The community was left with a "broken" tool let's say. I couldn't just let it die So I built the new version from scratch with the same open-source spirit, but a better…
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