Zinchrom — Synchronize Faster
Zinchrom is a file synchronization software targeted at analyzing tons of files rapidly using efficient algorithms, data structures and processor parallelism. (speeding up the actual synchronization of process the files is another story; it depends on your disk performance)
This project, currently administered and developed by Mnjul, is open-source under CPL (no GPL due to its use of Windows Template Library). It is currently being planned only, with no specific release dates.
The project is targeted at mainstream Windows (XP from SP2, 2003, Vista, 2008, 7), 32-bit or 64-bit (with 64-bit optimization design in mind). The core algorithm and data structure used for analysis should probably be portable to other platforms without troubles.