DiskBoss is a file management toolkit that enables you to classify and categorize files, find duplicate files and free-up storage space. You can scan drives or folders and view a report of how your storage space is utilized by file type. It automatically categorizes your files by general types (e.g. multimedia files, executables, documents etc.) and allows you to drill down further to view results for individual files types and eventually a list of all files within the group. Other features include generating of MD5, SHA1 or SHA256 signatures for files and HTML, Excel CSV and ACSII text. The free version is limited to 250,000 files.