iBored

iBored is a portable application that you can use to edit the hexadecimal code of any file. It comes packed with several useful options that should meet the requirements of advanced users.

Since installation is not a prerequisite, you can drop the program files somewhere on the hard disk and just click the executable to run.

There is also the possibility of saving iBored to a pen drive or other mass storage device, in order to run it on any PC with minimum effort and no prior installers.

What's more, the tool does not create new entries in the Windows registry or Start menu, leaving no traces behind after removal.

The interface is made from a normal window that you can fill with multiple files using the file browser, and select one to view its hexadecimal display.

It is possible to connect to a remote PC, write blocks to file or vice versa, back up used blocks, perform a scan by specifying the start block, block count and steps, use a search function for hex or text, view a disk's structure, and so on.

iBored does not put a strain on computer resources, since it uses low CPU and RAM. It is very responsive to commands and works fine, without causing the OS to hang, crash or pop up error dialogs. However, its options are not intuitive for casual users, making it difficult to work with the tool.