Integrates AJC Diff v2 into Visual Studio. AJC Diff lets you compare files with editing abilities and syntax highlighting.

Select one or two files on the solution explorer, right click and select AJC Diff to compare them.

Highlight some source code, right click, select AJC Diff and you can compare that snippet of source code.

This is a free Visual Studio extension but you must download AJC Diff which can be trialled for 30 days and then costs $19.

Read more here:

http://www.ajcsoft.com/diff-compare-files.htm

Additionally when purchasing AJC Diff you can get 30% off the following products:

AJC Active Backup: Version control for any file on your hard drive. It automatically backs up files when you save allowing you to go back to any version and instantly show a diff between any version. Even if you have a version control system this protects you from coding mistakes and corruption etc, up to the second. Archives are small because it only stores the changes each time. v2 is now available that also links into Visual Studio. Read more here:
http://www.ajcsoft.com/active-backup.htm

AJC Sync: Sync/backup your files to many locations with full control and file diffs etc. Sync with drives, network, FTP, SkyDrive, Dropbox etc. Optionally archive so you can undo to any version if you make a mistake. Read more here:
http://www.ajcsoft.com/file-sync.htm

AJC Grep: Powerful search, replace and data extraction tool. Read more here:
http://www.ajcsoft.com/grep-search.htm