| HDiskDefrag x64 | Software to Convert OST2PST | O&O Defrag Free Edition | Delete Empty Folders Software | |
| 3.0.5 | 5.5 | 14.1 B431 | 7.0 | |
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| Freeware | Shareware | Freeware | Shareware | Licence |
| FREE | $49.00 | FREE | $19.99 | Price |
| 0.27 MB | 24.40 MB | 17.20 MB | 5.22 MB | File size |
| Aug 20, 2015 | Mar 13, 2018 | Sep 19, 2013 | Sep 5, 2011 | Update |
| 15 | 42 | 18 | 15 | Downloads |
| Windows XP, Windows Vista x64, Windows 7 x64, Windows 8 x64, Windows 10 x64 | Win2000, Windows 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows Vista x64, Windows XP | Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10 | Windows XP, Windows Vista, Windows Vista x64, Windows 7 x32, Windows 7 x64, Win2000, WinOther, Windows 2000, Windows 2003, Windows 8 | OS |
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