| Distribute Virtual Disk Enterprise | Batch PDF Security Remover | Birdie PDF Security Remover | Change Security of PDF | |
| 1.4 | 3.5 | 3.5 | 3.0 | |
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| Shareware | Shareware | Shareware | Shareware | Licence |
| $399.90 | $19.00 | $19.00 | $19.00 | Price |
| 1.66 MB | 1.09 MB | 1.09 MB | 1.09 MB | File size |
| Aug 1, 2007 | Feb 10, 2014 | Feb 10, 2014 | Feb 28, 2013 | Update |
| 16 | 31 | 18 | 20 | Downloads |
| Windows 2000, Windows XP, Windows 2003 | Win2000, Windows 7 x32, Windows 7 x64, Windows Vista, Windows Vista x64, Windows XP | Win2000, Windows 7 x32, Windows 7 x64, Windows Vista, Windows Vista x64, Windows XP | Win2000, Windows 7 x32, Windows 7 x64, Windows Vista, Windows Vista x64, Windows XP | OS |
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