Observed arrival · 2026-11-02
MegaCSV takes on the CSV that Excel can’t open
A free tool for opening, searching, and filtering very large CSV files, then exporting selected rows to Excel.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People working with CSVs too large for spreadsheet apps
- Worth noticing
- The site reports testing files up to 20 GB and 192 million rows; its stated timings were measured on an M1 MacBook Air with 8 GB RAM.
Field notes
The page lays out a three-step sequence: choose a file, state a filter in plain words, and export the matching rows. It says oversized results are split into separate Excel sheet tabs, and reports testing up to 20 GB and 192 million rows. The published speed figures are tied to a specific setup: an M1 MacBook Air with 8 GB RAM running Chrome.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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