I built an "ilovepdf" for CSV files (and I called it ILoveCSV)
We often find ourselves waiting for Excel just to do simple tasks like merging two CSVs, checking for duplicates, or converting a PDF table to CSV. Thus, I built ilovecsv.net. It's a suite of 30+ free tools that run in your browser.
I built an "ilovepdf" for CSV files (and I called it ILoveCSV) launched on December 29, 2025 with 5 votes, #2,550 of 11,628 launches that month and more than 75% of that year's launches.
What it does
Free professional CSV toolkit with 50+ tools for data cleaning, analysis, visualization & transformation. Process CSV files instantly in your browser. Privacy-first, no installation, no coding. Used by data professionals worldwide.
The ultimate and powerful CSV engine. Process thousands of rows in your browser. Your data never leaves your device. HowToCSV is a free, browser-based CSV toolkit with 60+ tools for cleaning, converting, analyzing, and visualizing CSV and Excel data. Unlike server-side converters, every tool runs locally via WebAssembly directly in your browser tab: no file is ever uploaded to a server, so nothing leaves your device. It covers common tasks like fixing encoding errors, deduplicating rows, pivoting tables, converting between CSV/JSON/Excel/Parquet, and detecting outliers, without installing software or writing code. Analysts, marketers, and developers use it for one-off spreadsheet fixes and…from ilovecsv.net
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I've built a C# IDE, Runtime, and AppStore inside Excel2023 · querystorm.com · ▲670The project is called QueryStorm. It uses Roslyn to offer C# (and VB.NET) support in Excel, as an alternative to VBA. I've posted about it before, but a lot has changed since then so figured I'd share an update. The current version includes a host of new features, namely a C# debugger, support for NuGet packages, and the ability to publish Excel extensions to an "AppStore" (which is essentially a NuGet repository). The AppStore can be used by anyone with the (free) runtime component. Another great addition is the community license, which is a free license for individuals and small companies…
CSV GB+ by Data.olllo – Open and Process CSVs Locally2025 · apps.microsoft.com · ▲51I built CSV GB+ by Data.olllo, a local data tool that lets you open, clean, and export gigabyte-sized CSVs (even billions of rows) without writing code. Most spreadsheet apps choke on big files. Coding in pandas or Polars works—but not everyone wants to write scripts just to filter or merge CSVs. CSV GB+ gives you a fast, point-and-click interface built on dual backends (memory-optimized or disk-backed) so you can process huge datasets offline. Key Features: Handles massive CSVs with ease — merge, split, dedup, filter, batch export Smart engine switch: disk-based "V Core" or RAM-based "P…
Convert CSV files to searchable and sortable HTML table2017 · github.com · ▲28Simple command-line utility to convert CSV, TSV and Excel files into a single self-contained HTML page with search, filters, and sorting - vividvilla/csvtotable
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More work this month
the category →
Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.
Work · 26d ago · loficities.com
Smooth Recorder▲257Mac screen recordings that look edited when you hit stop
Work · 20d ago · smoothrecorder.com
Work · 14d ago · readrare.com
Source: Show HN post ↗
Launched alongside, December 2025
the whole month →- GP
Life & fun · Dec 2025 · dosaygo-studio.github.io
Hi everyone! My name's Luke and I made the original Jmail here alongside Riley Walz. We had a ton of friends collaborate on building out more of the app suite last night in lieue of DOJ's "Epstein files" release. Please AMA!
Life & fun · Dec 2025 · jmail.world
PlanEat AI▲733AI turns your health goals into a 7-day menu & grocery list
AI · Dec 2025 · planeatai.com
Community, All the HN belong to you. This is an archive of hacker news that fits in your browser. When I made HN Made of Primes I realized I could probably do this offline sqlite/wasm thing with the whole GBs of archive. The whole dataset. So I tried it, and this is it. Have Hacker News on your device. Go to this repo (https://github.com/DOSAYGO-STUDIO/HackerBook): you can download it. Big Query -> ETL -> npx serve docs - that's it. 20 years of HN arguments and beauty, can be yours forever. So they'll never die. Ever. It's the unkillable static archive of HN and it's…
Dev tools · Dec 2025 · hackerbook.dosaygo.com
