A Windows desktop diff tool for comparing git branches, with AI-powered code review and explanation.
Publisher’s description
What is DiffThis?
DiffThis by Matt Whitwam is open-source Windows software in the developer utilities category. It is written in C#.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 1.8.0, released on July 16, 2026. The version history goes back to June 15, 2026: 4 releases, all linked to the official files.
Project description on GitHub: “Compare git branches with a syntax-highlighted diff, then get AI-powered code review and explanations from Claude, GitHub Copilot, or your own self-hosted Ollama models.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
Cons
- No native ARM64 build
In short: DiffThis is an open-source developer utilitie tool for 64-bit PCs.
Is DiffThis safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
EAD7E76599D6F211D581C0B1F28FAB01C4044E6C87FED6A33C276A89DEF62F25· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 4 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.8.0Latest | July 16, 2026 | — | 64-bit ZIP |
| 1.7.0 | July 2, 2026 | — | 64-bit ZIP |
| 1.6.0 | June 20, 2026 | — | 64-bit ZIP |
| 1.4.0 | June 15, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id MattWhitwam.DiffThis -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Matt Whitwam
- Category
- Developer utilities
- Licence
- The Unlicense
- Price
- Free
- Source code
- github.com/matt-dx/diffthis
- Written in
- C#
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 1.8.0
- Released
- July 16, 2026
- Added to the catalogue
- June 15, 2026
- Versions listed
- 4
- winget ID
- MattWhitwam.DiffThis
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is DiffThis free?
Yes. DiffThis is open-source software under the The Unlicense licence.
Is DiffThis safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install DiffThis with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does DiffThis run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of DiffThis?
The versions page lists all 4 versions with links to their official installer files, back to June 15, 2026.
Can I use DiffThis without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to DiffThis?
WinMerge, jq, x64dbg, delta and Difftastic. The alternatives page compares them.
