JustAssembly

JustAssembly is a small-sized Windows application which facilitates a clean and simple interface for comparing assemblies. It uses the developer's JustDecompile Engine, which is open-source, in order to decompile code to C#.

The straightforward .NET diff tool is able to analyze two files or two folders containing numerous DLLs. It works with all compiled source code, including methods.

For example, you can use it to figure out if an assembly was updated by comparing the old and potentially new version. Otherwise, if you're preparing to release a new version of your software programs, you can check your API to avoid breaking changes, especially when talking about complex builds with many code lines.

Following a fast installation that shouldn't give you any trouble, you're welcome by a minimalistic window that covers the entire screen, which is initially empty. The window can be resized by dragging the margins.

You can start a new comparison session by browsing the hard drive for two DLL files or two folders with many DLLs to compare. All resources are neatly structured in a tree, and all code is shown by default, including the modified and unmodified sections. However, you can ask JustAssembly to show only the unmodified parts.

Worth noting is that multiple tabs are supported, which means that you can keep multiple opened comparison sessions at the same time and easily switch through them. It's only possible to view the code and any changes, though, since there are no editing features available and you cannot export anything to file.

To sum it up, JustAssembly provides you with a clear-cut environment for comparing .NET assemblies from any two files or two folders containing numerous DLLs. Although it doesn't have richer features, it worked smoothly on Windows 10 in our tests and had minimal impact on the computer's performance.