Choose Altova MissionKit to experience the full power of Altova’s tools

In addition to DiffDog, the Altova MissionKit download will provide you with the optimal evaluation experience, since it contains the entire line of Altova developer tools.
Download a free, fully- functional, 30-day trial of Altova MissionKit 2018
Operating System
Language

Download DiffDog

Use this page to download the latest version of DiffDog, which is Version 2018 SP1.
To experience optimal evaluation, download DiffDog Enterprise Edition with the most advanced feature set available.
Select your software version, and click the Download button below to download the self- contained Installer for Altova DatabaseSpy 2016.
Altova DiffDog 2018
Enterprise Edition
provides the most advanced functionality, including comparing/merging Microsoft Word docs, XML Schemas, and databases.
Operating System
Language
Start a FREE 30-day trial or activate with your purchased license key code
Altova DiffDog 2018
Professional Edition
supports diff/merge of text files, folders, and directories. It also includes XML-aware comparison options.
Operating System
Language
Start a FREE 30-day trial or activate with your purchased license key code

Previous Releases of DiffDog

If you need to access previous software releases (e.g., to reinstall a previously purchased product after a hardware failure), you can access older versions of DiffDog here:
Software Release
Language
Free Trial Evaluation Information
To start your free, 30-day trial, simply download and install the software you wish to evaluate. When you start the software, you will be prompted to request an evaluation keycode, which you will receive via email. Your personalized evaluation keycode unlocks the software, and all features are fully enabled for 30 days.