This extension provides an easier user interface to compare files using the new integrated Diff Editor in Visual Studio. You can select 2 files in the solution explorer to compare them in the diff Editor.You can also right click on any file in solution explorer or right click on a document tab to compare that file with any file on disk. The File comparer that is opened, is editable and has integrated language service support. This tool to compare files is available for the non-source controlled files only. The source-controlled files can be compared normally using the TFS Compare option. To learn more about the Diff Editor please visithere.