DiffVue is a folder and file compare/differencing utility;
This contains 4 main applications; DiffVue, DiffFTP*, DiffEditor and FullVue and they are all Unicode applications.
1.Synchronizes files and folders between laptop and PC, home and office, etc.
2.Compares folder trees side-by-side with mismatches highlighted
3.Displays text files side-by-side with changes highlighted
4.Merges changes to source code, Allows editing any text file including Unicode files
5.Generates a single PDF file for the existing folders
6.Displays Non-text files
7.Compares Local files against FTP server*
8.Abundant Short-cut keys to minimize the use of the mouse.

You can consider DiffVue as a mini Windows Explorer, plus you can display up to two folders in 2 views. Although DiffEditor and FullVue can be launched from Windows, they are tightly coupled with DiffVue, and called from DiffVue.
* Does delete / copy / rename file(s) & folder(s) and undo the previous file operations.
* Compares two text files whether one or both is Unicode formatted file or not.
* Synchronizes two folders.
* Creates a single PDF file using existing file or folder.
* Provides the enhanced search tool including regular expression.
* Provides set of useful tools for resource files to make localization process simple.

The license of this software is Free Trial Software, the price is $20.00, you can free download and get a free trial before you buy. If you want to get a full or nolimited version of DiffVue, you can buy this file compare software software.