An Excel Alternative for Large CSV Data Sets

Prepare oversized CSV exports locally. Inspect, filter, merge, and summarize the source, then export a manageable result for Excel or your next application.

Why Replace Traditional Spreadsheets for Large Data?

Use DataOlllo when your task is preparing large local files. Keep Excel for workbook formulas, formatting, and existing reports. Power Query, a data model, or a script may also suit your workflow; choose based on the operation, available memory, and your team's skills.

Inspect columns and values before processing
Filter, group, and summarize using visual tools
Split, merge, and clean CSV exports
Prepare a focused result for downstream reporting
Core file processing runs locally; AI is optional

Merge Large Spreadsheets or CSV Files Without Formulas

Combine datasets with matching columns — no formulas or scripting needed.

Summarize CSV Data by Category

See averages, sums, counts, or unique values for any column in one click.

Filter Large Data Sets Locally

Keep the rows and columns needed for a defined reporting question.

Example: prepare monthly orders for Excel

Keep the original exports. Check matching headers, merge the files, filter the reporting month, and summarize by region. Reconcile totals before exporting the result to Excel. This illustrates a workflow; it is not a speed benchmark.

Continue with the CSV merge guide, large CSV filtering guide, or free CSV tools.

Try a Smarter Spreadsheet Today

Ditch formula hell. DataOlllo gives you a visual, scalable, no-code way to work with big files — all on your desktop.

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