CSV Viewer

A native macOS app for viewing and editing CSV files. It opens multi-gigabyte files in a few seconds and lets you edit them in place.

⬇︎ Download for macOS
Free & open source · macOS 10.15+ · Apple Silicon & Intel
CSV Viewer showing a CSV file in a dark macOS window

How to open the app

CSV Viewer isn't signed with an Apple Developer ID, so macOS blocks it the first time. You only have to do this once:

  1. In Applications, right-click (or Control-click) CSV Viewer → Open → Open.
  2. If that's blocked on newer macOS: open System Settings → Privacy & Security, scroll down, and click Open Anyway.
  3. Terminal fallback: /usr/bin/xattr -dr com.apple.quarantine "/Applications/CSV Viewer.app"