Code Compare is a powerful file and folder merge tool that demonstrates a new level of code comparison.
Key features:
*Folder comparison and merge
*Visual Studio 2010, 2012, 2013, 2015, 2017 and 2019 supported
*Command line interface and VCS integration
*File editor with search and bookmarks
*Use Intellisense while comparing code
*Syntax highlighting for multiple languages
*Show changes within compared code lines
*3-way comparison and merge
*Structure code comparison
*Changes navigation window
*Difference Explorer
*Unchanged regions collapsing
*Word-by-word file comparison
*Support for source control systems
*Detection of similar lines
*Syntax highlighting for Less, Sass, and TypeScript files
*Interface scaling support on high-DPI monitors
I'm using it very often, Code Compare is a great tool!