LeapRows icon
LeapRows icon

LeapRows

LeapRows is a blazing-fast, browser-based CSV analysis tool powered by DuckDB-WASM. It handles 1,000,000+ rows directly in your browser — no server uploads, no Python setup, no file splitting required.

1,000,000 rows processed instantly in your browser — no uploads, no server.

Cost / License

  • Freemium (Pay once or Subscription)
  • Proprietary

Application type

Platforms

  • Online
Real-time pivot charts on massive datasets.
Visual VLOOKUP replacement — join multiple CSV files on composite keys, no SQL needed.
+4
Drag in multiple CSVs and merge them into one file in seconds.
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Features

Properties

  1.  Privacy focused

Features

  1.  Import CSV Data
  2.  Ad-free
  3.  No registration required
  4.  Export to CSV

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LeapRows News & Activities

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Grist

Transform data with an open-source interface using relational databases and Python engines. Collaborate in real-time with custom permissions for security.

 
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LeapRows information

  • Developed by

    JP flagLeapRows

  • Licensing

    Proprietary and Freemium product.

  • Pricing

    One time purchase (perpetual license) ranging between $49 and $79 + free version with limited functionality.

  • Alternatives

    4 alternatives listed

  • Supported Languages

    • English
    • Japanese
LeapRows was added to AlternativeTo by yuki0510 on and this page was last updated .
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What is LeapRows?

LeapRows is a blazing-fast, browser-based CSV analysis tool powered by DuckDB-WASM. It handles 1,000,000+ rows directly in your browser — no server uploads, no Python setup, no file splitting required.

All processing happens locally on your device using WebAssembly (WASM) and the Origin Private File System (OPFS). Your data never leaves your browser, making it ideal for teams with strict data privacy requirements.

Key features:

  • 1M+ row support — break the Excel/Google Sheets row limit without splitting files
  • Private by design — zero data upload; all analysis runs on your device
  • Smart JOIN — merge multiple CSV files on multiple keys without SQL
  • Instant pivot & aggregation — real-time charts and tables, no spinning wheel
  • Recipes — save your data prep steps as reusable JSON workflows and share them with your team
  • Presets — regex extraction, ranking, URL parameter parsing via GUI, no code needed
  • Parquet support — upload or export in Parquet format for faster repeat analysis

LeapRows is built for data analysts, marketers, and sales ops professionals who need spreadsheet-level simplicity at database-level scale — without waiting for an engineering ticket.

Free plan available (no sign-up required). Lifetime deal currently offered in Beta.

Official Links