Instant startup, massive files
Background indexing means you can inspect the first rows of a 27 GB file the moment it opens, while the rest loads silently.
CSView 2 for macOS
CSV at any scale.
Open files that break everything else.
Open multi-gigabyte files in seconds. Inspect, search, and navigate 300M+ rows with smooth scrolling and modest memory usage — on Apple Silicon.
- £1.99
- macOS 12+
- Apple Silicon & Intel
Why CSView
Built for viewing, not editing
Most CSV tools are built like spreadsheets. CSView is optimised for a single job: opening enormous files quickly and letting you explore them safely.
Smooth scrolling at any scale
Consistent, responsive scrolling through hundreds of millions of rows. Modest memory usage even with massive files.
Full-file text search
Search across the entire file with match counting and instant result navigation. Results appear as the background pass completes.
Flexible format support
CSV, TSV, custom delimiters, multiple encodings (UTF-8, Windows code pages, ISO Latin, macOS Roman), and auto-detection.
Read-only by design
CSView never modifies your source data. Inspect exports, logs, and datasets safely without risk of accidental changes.
Copy as Markdown tables
Select cells and copy as rich text or plain-text Markdown-compatible tables — ready to paste into docs, issues, or notes.
In action
See what CSView can do
Performance
300 million rows. No problem.
A 27 GB synthetic dataset with over 300M rows — opened and scrollable within seconds of launch. Background indexing handles the rest.
Navigation
Pinch to zoom, drag to resize
Zoom from 0.25× to 4×, resize columns with a drag, or double-click a header to autosize. Row numbers and column headers are always visible.
Format support
Configure any delimiter or encoding
Set custom delimiters, line endings, quote characters, and text encodings. Auto-detection handles the common cases — live preview shows changes before you commit.
Versions & Platforms
Choose the right version
CSView 2 is a ground-up macOS rewrite. CSView 1.x is the original cross-platform release — still maintained and available for free.
| Feature | CSView 2.xLatest | CSView 1.xCross-platform |
|---|---|---|
| Version | Current: 2.1 — February 2026 | Latest: 1.3.8 — no longer actively developed |
| Platforms | macOS | macOS, Windows, and Linux |
| Price | No subscription — £1.99 one-time | Free and open source |
| What you get | Ground-up native macOS rewrite · Apple Silicon optimised · New high-performance indexing engine · Handles 300M+ row files | Viewing, search, and navigation · No new feature development |
| Get it | Mac App Store | No App Store — direct download only · Source on GitHub |
CSView 1.x Downloads
Direct downloads — no App Store required. Older versions
| Platform | Architecture | Package | Version | Size | Download |
|---|---|---|---|---|---|
| macOS | Apple Silicon (aarch64) | .dmg | 1.3.6 | 50.8 MB | Download macOS Apple Silicon (aarch64) .dmg |
| macOS | Intel (x86_64) | .dmg | 1.3.7 | 52.7 MB | Download macOS Intel (x86_64) .dmg |
| Windows | Intel (x86_64) | .zip | 1.3.8 | 63.7 MB | Download Windows Intel (x86_64) .zip |
| Windows | Intel (x86_64) | .exe installer | 1.3.8 | 80.1 MB | Download Windows Intel (x86_64) .exe installer |
| Linux | Intel (x86_64) | .jar (GTK) | 1.3.3 | 17.8 MB | Download Linux Intel (x86_64) .jar (GTK) |
Background
CSView started in 2016 as a cross-platform tool for opening CSV files that break everything else, and is now a native macOS app.
Project history and more detailsGet started
Available now on the Mac App Store
CSView 2 is a one-time purchase. No subscriptions, no cloud, no telemetry — just a fast, native macOS app.
£1.99 · macOS 12+ · Apple Silicon & Intel