DeltaView
DeltaView shows what changed between two folders or two files, and helps you bring them together. It is a free, open-source comparison and merge tool for Linux and Windows.
On the Dhiva Labs site the app is listed as Delta View. The app calls itself DeltaView, and its command is delta-view.
Who it is for
- Developers who review changes, resolve merge conflicts, or want a visual
git difftoolandgit mergetool. - Testers and writers who need to see exactly what changed between two versions of a file, a config, or an export.
- Anyone who keeps two copies of a folder (a backup, a release, a server) and wants to know how they differ.
What it does
| Job | What you get |
|---|---|
| Compare folders | Two folder trees side by side: what is new, removed, or modified. Filters, sorting, ignore patterns, .gitignore support, HTML and CSV reports. |
| Compare files | A side-by-side diff with the changed words highlighted. Copy a change across, or edit in place, with undo. |
| Merge three versions | Left, Merged and Right panes. Clean changes are merged for you; you decide each conflict. |
| Synchronize folders | Mirror one side onto the other, or copy both ways, with a preview of every step first. |
| Compare images | Side by side, swipe, onion skin, and a pixel difference view. |
| Compare JSON, YAML, CSV | By structure, so reordered keys or rows do not count as changes. |
| Compare text you paste | Two snippets, or the clipboard, without saving files first. |
DeltaView reads local folders, zip and tar archives (read-only), and folders on SFTP servers.
Platforms
| Platform | Architectures | How to get it |
|---|---|---|
| Linux | x64, arm64 | Snap Store, Dhiva Labs PPA (Ubuntu 24.04, x64), or a .deb from GitHub |
| Windows | x64, arm64 | Installer from GitHub |
See Install DeltaView for the commands.
Privacy
DeltaView has no account, no telemetry, no crash reporting and no update check. It connects only to the SFTP servers you choose. Settings, recent comparisons and trusted server keys stay on your computer. Passwords and key passphrases are never written to disk.
Where to start
- New to comparison tools? Follow the beginner guide.
- Want one task? Go to Compare two files, Compare two folders or Merge three versions.
- Using Git? See Use DeltaView with Git.
Found a bug or have a question? Open an issue on the DeltaView GitHub issues page.