evaluation version · full-featured · 30 days · no functional limits

Download Diffoniq 2.0

Try everything before you buy: the evaluation version is the complete program for 30 days — no locked features, no watermarks. A purchased licence file unlocks the same build.

Installer recommended

MSI wizard — installs Diffoniq.exe and the console companion DiffoniqC.exe (no runtime DLLs) plus the help, creates Start menu and desktop shortcuts. Installing a newer version on top keeps your settings.

Diffoniq-2.0.2-x64.msix64

Download installer

SHA-256 50846cc2cd0deb1583bcabf944ae5f056c4fe998927eea0a10f4a7cad0cc2a7c

Portable

One executable, zero installation. Put an empty diffoniq.ini next to it and Diffoniq stays fully portable — settings, the content-hash cache and your licence file live beside the program, nothing is written elsewhere. A USB stick works fine.

Diffoniq-2.0.2-portable-x64.zipx64

Download ZIP

SHA-256 3044770ee37a937d649751d547ba2cf03e4f52a5074236f84aaa99233e72203e

Both packages also contain DiffoniqC.exe, a console companion for batch files and PowerShell: it waits for /report or /sync and returns the exit code.

Windows may show a SmartScreen notice (“Windows protected your PC”) for a new release until it has built up reputation. Check that the publisher is C.Sitte Softwaretechnik e.U., then choose More info → Run anyway.

Version 2.0.2 (what’s changed) · build ce93f738 · the installer and the program inside the ZIP are Authenticode-signed by C.Sitte Softwaretechnik e.U. with an RFC 3161 timestamp — Windows shows the publisher before anything runs. Verify a download with certutil -hashfile <file> SHA256 and compare it with the checksum above.

By downloading you accept the End User License Agreement. Settings are stored as a plain INI file (%APPDATA%\Diffoniq\diffoniq.ini, or next to the executable in portable mode).

Previous versions

Older versions don’t receive fixes – use them only to step back until the next release.

  • 2.0.1 · 11 Oct 2026 · installer · ZIP · what’s changed Diffoniq-2.0.1-x64.msi 0ffa3545a548082e90b1fb525388a1ded25b74e6671d6e3eb0a797ea60af5f79 Diffoniq-2.0.1-portable-x64.zip 63ee5f97de641563aa7b9c1363e04b43358bbfd977692698fb3d425212677108

System requirements

Windows 10/11, 64-bit. Windows on ARM: runs under the built-in x64 emulation — there is no native ARM64 build, and we do not test on ARM hardware. Only 64-bit builds are released.

Unattended installation

The same MSI installs silently for software distribution (GPO, Intune, …):

msiexec /i Diffoniq-2.0.2-x64.msi /qn
    INSTALLDESKTOPSHORTCUT=0          // suppress the desktop shortcut
    LICENSE="\\server\share\diffoniq.lic" // deploy a licence file for all users

The deployed licence lands in %PROGRAMDATA%\Diffoniq\diffoniq.lic for all users of the machine and survives upgrades and uninstalls.

Guides

Short how-to pages for git difftool, TortoiseGit and TortoiseSVN, IntelliJ IDEA and the other JetBrains IDEs, comparing two ZIP files, checking a backup against the original, Total Commander and WinSCP — all guides.

Upgrading from WDiff32?

Install 2.0 over your current version — settings, colours, recent paths and your registration are picked up automatically on the first start. Registered WDiff32 users get a Diffoniq 2.x licence free: read the upgrade notes.

Still need WDiff32 1.59? The last 1.x release stays available on the company site — it is the only option on 32-bit Windows.