F2F

F2F is a simplistic program whose sole purpose is to compare any two given files, according to their content. It can be seamlessly handled, even by users with little or no experience in software programs.
As installation is not a prerequisite, you can just drop the program files anywhere on the hard disk and access the executable immediately. As an alternative, you can move F2F to a USB flash disk or similar storage unit, in order to run it on any workstation with minimum effort.
It's important to take into account that portable apps do not tinker with the Windows Registry, thus the risk of system errors is not increased. Another convenient factor is that leftover files are not kept on the hard disk.
The interface of the utility is made from a small, regular window, whose layout has a plain structure. You can import two files of any format into the workspace using either the file browser or drag-and-drop support; the app even provides two plain text document examples for testing purposes.
If the two files have different content, F2F shows the first different byte location from the head or the end, depending on what type of comparison you perform - "Forward" or "Reverse"; this information is displayed in the status bar. Aside from the main functionality, you can open either file in the default associated application. There are no other notable options available through this program.
F2F is very low-demanding when it comes to the CPU and system memory, hence it doesn't affect the computer's performance. It is very responsive to commands and carries out comparison jobs rapidly and without errors. However, F2F has not been updated for a very long time, and its features are quite limited.