DeltaWalker (AKA: Deltopia DeltaWalker) is an advanced and professional file and folder visualization comparison and synchronization software for Windows, Mac and Linux platforms. It has a lot of features and is powerful, but it pales in comparison to similar tools like Beyond Compare. Especially since it's written in Java and using the Eclipse IDE, the entire program is too bloated, which is something AppNee can't stand.

Araxis Merge is a professional and easy-to-use visual file/folder comparing, merging and synchronizing program for Windows and Mac platforms, developed by Araxis from Isle of Man. It is suitable for all kinds of professionals who often need to deal with documents and texts to use, such as software engineers, web developers, version and quality control managers, code reviewers and auditors, legal and publishing professionals, and so on.