FileMenu Tools - FileMenu Tools lets you customize the context (right-click) menu of Windows Explorer.
Beyond Compare - Beyond Compare allows you to compare files and folders.
Shell context menu manager - Powerful and lightweight context menu manager for Windows File Explorer.
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
MenuMaid - Free Download MenuMaid - A simple-to-use and intuitive application that helps users delete Windows Explorer and Internet Explorer context menu items, while allowing them to select the entries to be deleted
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.