exe2wordsize

exe2wordsize is a lightweight console application that provides a quick way to find out the bitness or word size of a program without having to actually run it. Considering that the role of the tool is to help you select an app version that ensures the best performance and compatibility, this is a specialized program that advanced users might find useful.

Functionality-wise, the tool is straightforward and all you need to do is specify the path of the desired executable to learn its word size. You can run the utility with arguments, such as various raw reading modes, for instance. Selecting one of the raw reading modes also entails that you can specify a maximum number of bytes to read, which can be useful for optimization.

You can run the tool regardless of the specifications of your current operating system. If you were to run a 32-bit app on a 64-bit OS, the program is able to correctly identify its architecture. On the other hand, you need to make sure that the OS can run the application that is being tested. The developer also mentions that due to its nature, WinAPI is not entirely trustworthy.  

In all fairness, the tool is little to no use for the average user, especially if they already know the architecture of their processor and make sure that installed programs are up-to-date. On the other hand, it can be helpful for a system administrator who wants to make sure that the distributed apps are optimized for the correct word size on the target machine.

exe2wordsize is a nice little addition to have if you are passionate or already work in optimization and are interested in understanding the architecture of EXE files.