An Umbraco plugin which adds a changelog dashboard: https://our.umbraco.org/projects/backoffice-extensions/whodunit/

Here is the first thing you see when you open the "History Report" tab:

Once you click "Generate Report", you will see a "Download Report" link:

Once you click the download link, you can open the CSV file, which will look something like this:

Keep in mind there may be no entries to being with. Whodunit only tracks changes once it's been installed.

To build the Umbraco package, follow these steps:

• Build the solution in Visual Studio using the "Release" configuration.
• Run "grunt package".
• The Umbraco package is the ZIP file that gets created in the "dist" folder.

If you would like to contribute changes to Whodunit, here is how you can develop locally:

• Run "grunt" (the default task will copy the files to the test website).
• Rebuild the solution. This will run NuGet package restore.
• Run the test website. This will run the Umbraco installer.
• Once you have finished installing Umbraco, you should be able to log in and see the "History Report" dashboard.

Note that Whodunit was developed in Visual Studio 2015.