This Burp Suite extension adds a new tab to each response. A tab then shows a diff between a user set "base" response and the current response.
The project can be build using Gradle. With a functional Docker installation the following command may be the easiest way to build the project:
docker run --rm -it -v "$PWD":/home/gradle/project -w /home/gradle/project gradle gradle buildIf the build was successful, a Burp Suite importable extension is available under the path build/libs/response-differ.jar.