Work with CSVs?
Use an editor built for them.

Cassava combines the speed of a modern code editor with the familiarity of a spreadsheet. It opens large files quickly and stays responsive while you browse, edit, and analyze data.

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Cassava showing a CSV file in a native spreadsheet interface Cassava showing a CSV file in a native spreadsheet interface, dark mode
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Built for CSVs and the users who ❤️ them

CSVs are everywhere, but most tools treat them as an afterthought. Cassava is built specifically for browsing, editing, and analyzing tabular text data.

SPEED

Open and edit huge files quickly

Cassava is a native desktop application for macOS and Linux, not a web app wrapped in a browser shell. Open large CSVs, move through dense tables, and keep editing without waiting for a full office suite to catch up.
SHORTCUTS

Feels familiar from the first minute

Cassava supports the muscle memory you already have: spreadsheet shortcuts where you expect, editor shortcuts where you want them, a command palette for everything else.
EXPRESSIONS

Solve expressions inline

Use cells as lightweight scratch space. Enter an expression, solve it inline, and keep moving — no context switch, no separate calculator, no heavyweight formula ceremony.
FIND + FILTER

Transform data without code

Search, replace, filter, sort, deduplicate, and query data without writing a script. Query across files with powerful SQL built right in.
DATA INSIGHTS

Understand your data at a glance

Built-in statistics, charts, and pivot tables help you understand large datasets quickly. Create charts and pivot tables to spot distributions, trends, totals, and relationships.
NATIVE UI

Native performance that keeps up

Built for macOS and Linux—not a web app wrapped in a browser. Cassava opens large CSVs quickly and stays responsive as you scroll, search, edit, and analyze.
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Built around everyday data work.

Cassava is designed for people who work with tabular data every day. It combines the speed of a modern editor with the familiarity of a spreadsheet, making it easy to inspect, clean, transform, and analyze data without changing tools.

  • Open and edit CSV, TSV, XLS, XLSX, ODS, and other tabular files.
  • Work with datasets containing millions of rows.
  • Search, replace, filter, sort, and deduplicate data in place.
  • Clean and transform data before importing or sharing it.
  • Run quick calculations with inline expression solving.
  • Query one or more open files using SQL.
  • Inspect data with built-in statistics and summaries.
  • Create charts and pivot tables without leaving the application.
  • Copy selections as CSV, Markdown, or HTML.
  • Stay productive with familiar spreadsheet shortcuts and a command palette.

Whether you're cleaning exports, validating imports, exploring datasets, or preparing reports, Cassava keeps the focus on your data instead of your tools.

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Stop waiting on spreadsheets.

Open, edit, filter, analyze, and export data with a fast, fluid, native app.

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