HexBrowser is described as 'Tool that identifies file types. It does not care about the file extension, but opens each file to look for signatures so it can determine the exact type of a file. It now recognizes more than 800 different file formats' and is an app. There are seven alternatives to HexBrowser for Windows, Linux, Mac, Web-based and BSD. The best HexBrowser alternative is TrID. It's not free, so if you're looking for a free alternative, you could try TrID or TrIDNet. Other great apps like HexBrowser are Toolsley File Identifier, FileCHK, JHOVE and DROID.