Redmine

Currently (1.0.1) the "Repository -> View differences" only shows differences in source code files. It should be able to show also have some kind of "Changed files" view so that changes in directory structure and added and deleted (possibly binary) files could be visualized.

TortoiseSVN's "Compare revisions" / "Changed files" views are a model example of this.

An extra feature for comparing binary files could be showing their md5 or sha1 hashes.