Modern CSV is a good desktop editor. If what you really need is opening very large files, cleaning messy data, and comparing exports — Gridzu does all of that free, on your own PC, with private and local.
Most people searching for an alternative want a few specific things: a tool that's free (or free for what they need), one that opens very large files without hitting a row cap or slowing to a crawl, point-and-click editing and cleaning so they don't have to write formulas or scripts, and something that works offline and keeps their data private. Modern CSV is a fine general-purpose editor — this is about matching the tool to those particular needs.
Gridzu is free for Windows and leans into the heavier jobs:
If you also work with spreadsheets, Gridzu doubles as a CSV viewer for Windows and a lightweight free Excel alternative for tabular data.
Modern CSV is a well-built, general CSV editor, and if you're happy with it there's no reason to switch. Choose Gridzu when you specifically need big-file performance, want to compare or de-duplicate data with a couple of clicks, or simply want a free tool for those jobs. Honestly, many people keep both installed and reach for whichever suits the task in front of them — the tools complement each other more than they compete.
Your CSV is opened and processed entirely on your computer. Gridzu never sends your data to our servers — the only thing our service stores is the email you sign in with.
Modern CSV is a solid, well-regarded CSV editor, and for general editing it's a great choice. Gridzu is worth trying as an alternative if you specifically need to open very large files without a row limit, clean data with point-and-click tools, or compare two files to see what changed — all free on Windows. Many people happily use both, picking whichever fits the task.
Yes. Gridzu is free to download and use on Windows and macOS. There's no row limit and no paid tier gating the core features — you just sign in with an email.
Yes. Gridzu uses a native data engine built for big tables, so files with millions of rows and hundreds of megabytes open smoothly — well past the point where a normal spreadsheet freezes. There is no fixed row limit.
Yes. Gridzu opens and processes your CSV files entirely on your own computer — nothing is sent to our servers. The only thing our service stores is the email you sign in with.
Free for Windows. No credit card, private and local.
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