DupeTrasher 

Here's the deal: you find the faster and more optimized duplicate file finder, and we will give you the DupeTrasher licence for free! DupeTrasher will help you to get rid of the duplicated files from your system, fast & easy.
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Duplicate Finder 

Find and remove true duplicate files. Search duplicate file contents regardless of file name, Duplicate MP3s, photos, and any file type can be searched. Duplicate Finder matches byte by byte or CRC32 to give you most accurate results.
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DiskState 

Powerful duplicate file analyzer can help clean up e.g. MP3s, image files. Get rid of that space wasted from program crashes and normal use. 100% safe with recovery. Get reports, find changes to folders, cover tracks after surfing with more features.
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A1Click Ultra PC Cleaner 

Use Clean PC, Remove Tracks, or Do-it-yourself Setup to find internal clutter, hidden stores, junk files, and registry trash - 7 Bonus Cleaning Tools - uses A1Click Technology and No Remains Deletion - can run automatically at startup, keeps undo.
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PC Fix Express 

With a few easy steps PC-Fix Express, will scan the entire computer for any invalid entries and provide a list of errors found, so the user can choose to selectively or automatically clean any item or repair them all.
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SynchronEX File Synchronizer, Backup/FTP 

Robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to ZIP'ed backup to incremental FTP/DAV website upload. True synchronization of (re)moved files. Scheduled tasks.
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