1)   Araxis Merge 2007.3277
Two and three-way comparison of code, web pages and other text files, or even text pasted from another application (eg Word). Synchronise folders. Perform code reviews/audits. Work with folder trees containing thousands of files. Edit files in-place.
file, folder, comparison, merging, synchronization, diff, compare, merge, sync, syncing,

 2)   SyncFolder 1.1
SyncFolder is the visual file comparison/merging and folder synchronization application.
visual, file, comparison, diff, free, windiff, Merge 99, Merge99, Merge2000, Merge 2000,