Please, add extension column and ability to sort items by extension both in main window and in search window – search results. It is very useful. When I don't remember a full name I do search typing only some parts that I recall and results may have different extensions. Sometime the search result may contain a long list of files. You may tell that I can search by extension but the point is that I don't always remember extension, for example some files where archived (but not scanned inside archive) and I don't remember it.