CSV GB+ by Data.olllo – Open and Process CSVs Locally
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…
In plain words
CSV GB+ by Data.olllo is a desktop tool that opens, cleans, and exports large CSV files up to gigabytes in size without requiring code. It offers a point-and-click interface with dual processing backends—one memory-optimized and one disk-backed—to handle massive datasets offline. The tool supports merging, splitting, deduplication, filtering, and batch exporting across multiple formats including CSV, XLSX, JSON, and Parquet. Designed for data professionals, students, and privacy-conscious users who need to process large files locally without uploading data.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
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 Core" All processing is offline – no data upload or telemetry Supports CSV, XLSX, JSON, DBF, Parquet and more Designed for data pros, students, and privacy-conscious users Register for 7-days free to pro try, pro versions remove row limits and unlock full features. I’m a solo dev building Data.olllo as a serious alternative to heavy coding or bloated enterprise tools. Download for Windows: https://apps.microsoft.com/detail/9PFR86LCQPGS User Guide: https://olllo.top/articles/article-0-Data.olllo-UserGuide Would love feedback! I’m actively improving it based on real use cases.
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