Alternatives

Products that do what CSVUndo does

Undo Excel damage to CSVs (1.23E+12, lost zeros) in-browser

1
Excel CSV character Repair Tool▲3
Instantly repair scrambled formatting in your CSV files.
Jul 2026 · cleancsv.carrd.co
2
CleanMyCSV▲2
For finance teams: clean CSVs without uploading your data
Jun 2026 · cleanmycsv.org
3
csv.repair - A free CSV file repair tool▲1
Your broken CSV ends here.
Feb 2026
4
Fix Your Broken CSV Right Now
Fix broken CSVs 100% in-browser. Zero data uploaded.
1d ago · ikedalef.github.io
5CS
Comma Separated Values (CSV) to Unicode Separated Values (USV)▲208
2024 · crates.io
6
UseCSV▲113
Add delightful data import to your app in minutes
2022
7
CSV Repair & Deduper▲2
Clean broken and duplicate CSV rows offline—$19 once
Jul 2026 · store.marabusiness.net
8CL
Convert Large CSV/XLSX to JSON or XML in Browser▲41
Hello HN, I'm excited to share a project I've been working on: A simple, fast way to process huge CSV and XLSX files directly in your browser and export them as clean JSON or XML Here's a few things that makes this converter different: - runs in the browser - all parsing and conversion is client side can handle data any size data - automatically detects delimiters, encodings, and data types as it parses - Live preview with column renaming, search/replace, and data cleanup - Export to JSON or XML — clean, structured output that can be used for API or Databases backstory: I built this…
2025 · csvforge.com
9
FixMySheet▲1
100% in-browser, zero-upload Excel & CSV cleaner
9d ago · fixmysheet.pages.dev
10
Modern CSV▲111
A CSV editor/viewer
2019
11
Sheet2data▲85
Direct URL to a .csv or .json with your Google Sheets data
2021
12
Auto CSV to BOM Converter▲2
One-click background tool to stop Excel CSV mojibake
Jul 2026 · morio56.gumroad.com
13
ReconFiles▲2
Reconcile 2 CSV files. Drag and drop your files
Jun 2026 · reconfiles.co.uk
14
Sheet Shifter▲90
Migrate CSV data without opening a single file
2024
15
SheetRows▲2
100% Free Private Excel tools | Zero data leaves your device
Feb 2026
16
csvdiff.app▲9
Compare CSV files. Right in your browser
Jul 2026 · csvdiff.app
17
Fix Spreadsheet▲1
Clean messy CSV & Excel exports in seconds
3d ago · fixspreadsheet.com
18
CSV Cleaner▲3
Clean messy CSVs in seconds, no Excel formulas needed.
Feb 2026
19
neatcsv▲2
Clean messy CSV, Excel & JSON files in seconds
Feb 2026
20CG
CSV GB+ by Data.olllo – Open and Process CSVs Locally▲51
I 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…
2025 · apps.microsoft.com
21
CleanMyCSV▲1
Instantly fix US/EU CSV formats and encoding. No sign-up.
Apr 2026 · cleanmycsv.fr
22ST
SmoothCSV – The Ultimate CSV Editor▲5
Hey HN! I've been building CSV editors for 15 years. This is my third rewrite, and I think I finally got it right. Key features: - Excel-like operation for intuitive use - Equipped with basic to advanced tools necessary for handling CSV - Supports various formats and character encodings. Can handle CSVs with different column counts - Cross-platform (Windows/Mac, Linux coming soon) - Opens 100MB files in 1.6 seconds (12x faster than Excel) Tech stack: Tauri (Rust + React/TypeScript/TailwindCSS) Would love feedback from anyone dealing with large datasets daily! Website:…
2025 · smoothcsv.com
23
The CSV Pro▲2
20 free CSV and Excel tools. Files never leave your browser
7d ago · thecsv.pro
24
CSVall — 100+ Free Online CSV Tools▲1
The complete toolkit for CSV files.
May 2026 · csvall.com

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